diff --git a/packages/SettingsLib/src/com/android/settingslib/widget/FooterPreferenceMixin.java b/packages/SettingsLib/src/com/android/settingslib/widget/FooterPreferenceMixin.java
deleted file mode 100644
index fcf2363377030..0000000000000
--- a/packages/SettingsLib/src/com/android/settingslib/widget/FooterPreferenceMixin.java
+++ /dev/null
@@ -1,78 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package com.android.settingslib.widget;
-
-import android.content.Context;
-
-import androidx.preference.PreferenceFragment;
-import androidx.preference.PreferenceScreen;
-
-import com.android.settingslib.core.lifecycle.Lifecycle;
-import com.android.settingslib.core.lifecycle.LifecycleObserver;
-import com.android.settingslib.core.lifecycle.events.SetPreferenceScreen;
-
-/**
- * Framework mixin is deprecated, use the compat version instead.
- *
- * @deprecated
- */
-@Deprecated
-public class FooterPreferenceMixin implements LifecycleObserver, SetPreferenceScreen {
-
-    private final PreferenceFragment mFragment;
-    private FooterPreference mFooterPreference;
-
-    public FooterPreferenceMixin(PreferenceFragment fragment, Lifecycle lifecycle) {
-        mFragment = fragment;
-        lifecycle.addObserver(this);
-    }
-
-    @Override
-    public void setPreferenceScreen(PreferenceScreen preferenceScreen) {
-        if (mFooterPreference != null) {
-            preferenceScreen.addPreference(mFooterPreference);
-        }
-    }
-
-    /**
-     * Creates a new {@link FooterPreference}.
-     */
-    public FooterPreference createFooterPreference() {
-        final PreferenceScreen screen = mFragment.getPreferenceScreen();
-        if (mFooterPreference != null && screen != null) {
-            screen.removePreference(mFooterPreference);
-        }
-        mFooterPreference = new FooterPreference(getPrefContext());
-
-        if (screen != null) {
-            screen.addPreference(mFooterPreference);
-        }
-        return mFooterPreference;
-    }
-
-    /**
-     * Returns an UI context with theme properly set for new Preference objects.
-     */
-    private Context getPrefContext() {
-        return mFragment.getPreferenceManager().getContext();
-    }
-
-    public boolean hasFooter() {
-        return mFooterPreference != null;
-    }
-}
-
diff --git a/packages/SettingsLib/src/com/android/settingslib/widget/FooterPreferenceMixinCompat.java b/packages/SettingsLib/src/com/android/settingslib/widget/FooterPreferenceMixinCompat.java
deleted file mode 100644
index d45e56d486aec..0000000000000
--- a/packages/SettingsLib/src/com/android/settingslib/widget/FooterPreferenceMixinCompat.java
+++ /dev/null
@@ -1,72 +0,0 @@
-/*
- * Copyright (C) 2018 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package com.android.settingslib.widget;
-
-import android.content.Context;
-
-import androidx.preference.PreferenceFragmentCompat;
-import androidx.preference.PreferenceScreen;
-
-import com.android.settingslib.core.lifecycle.Lifecycle;
-import com.android.settingslib.core.lifecycle.LifecycleObserver;
-import com.android.settingslib.core.lifecycle.events.SetPreferenceScreen;
-
-public class FooterPreferenceMixinCompat implements LifecycleObserver, SetPreferenceScreen {
-
-    private final PreferenceFragmentCompat mFragment;
-    private FooterPreference mFooterPreference;
-
-    public FooterPreferenceMixinCompat(PreferenceFragmentCompat fragment, Lifecycle lifecycle) {
-        mFragment = fragment;
-        lifecycle.addObserver(this);
-    }
-
-    @Override
-    public void setPreferenceScreen(PreferenceScreen preferenceScreen) {
-        if (mFooterPreference != null) {
-            preferenceScreen.addPreference(mFooterPreference);
-        }
-    }
-
-    /**
-     * Creates a new {@link FooterPreference}.
-     */
-    public FooterPreference createFooterPreference() {
-        final PreferenceScreen screen = mFragment.getPreferenceScreen();
-        if (mFooterPreference != null && screen != null) {
-            screen.removePreference(mFooterPreference);
-        }
-        mFooterPreference = new FooterPreference(getPrefContext());
-
-        if (screen != null) {
-            screen.addPreference(mFooterPreference);
-        }
-        return mFooterPreference;
-    }
-
-    /**
-     * Returns an UI context with theme properly set for new Preference objects.
-     */
-    private Context getPrefContext() {
-        return mFragment.getPreferenceManager().getContext();
-    }
-
-    public boolean hasFooter() {
-        return mFooterPreference != null;
-    }
-}
-
diff --git a/packages/SettingsLib/tests/robotests/src/com/android/settingslib/widget/FooterPreferenceMixinCompatTest.java b/packages/SettingsLib/tests/robotests/src/com/android/settingslib/widget/FooterPreferenceMixinCompatTest.java
deleted file mode 100644
index 601da0512c7c5..0000000000000
--- a/packages/SettingsLib/tests/robotests/src/com/android/settingslib/widget/FooterPreferenceMixinCompatTest.java
+++ /dev/null
@@ -1,100 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package com.android.settingslib.widget;
-
-import static com.google.common.truth.Truth.assertThat;
-
-import static org.mockito.ArgumentMatchers.any;
-import static org.mockito.Mockito.mock;
-import static org.mockito.Mockito.times;
-import static org.mockito.Mockito.verify;
-import static org.mockito.Mockito.when;
-
-import androidx.lifecycle.LifecycleOwner;
-import androidx.preference.PreferenceFragmentCompat;
-import androidx.preference.PreferenceManager;
-import androidx.preference.PreferenceScreen;
-
-import com.android.settingslib.core.lifecycle.Lifecycle;
-
-import org.junit.Before;
-import org.junit.Test;
-import org.junit.runner.RunWith;
-import org.mockito.Mock;
-import org.mockito.MockitoAnnotations;
-import org.robolectric.RobolectricTestRunner;
-import org.robolectric.RuntimeEnvironment;
-
-@RunWith(RobolectricTestRunner.class)
-public class FooterPreferenceMixinCompatTest {
-
-    @Mock
-    private PreferenceFragmentCompat mFragment;
-    @Mock
-    private PreferenceScreen mScreen;
-
-    private LifecycleOwner mLifecycleOwner;
-    private Lifecycle mLifecycle;
-    private FooterPreferenceMixinCompat mMixin;
-
-    @Before
-    public void setUp() {
-        MockitoAnnotations.initMocks(this);
-        mLifecycleOwner = () -> mLifecycle;
-        mLifecycle = new Lifecycle(mLifecycleOwner);
-        when(mFragment.getPreferenceManager()).thenReturn(mock(PreferenceManager.class));
-        when(mFragment.getPreferenceManager().getContext())
-                .thenReturn(RuntimeEnvironment.application);
-        mMixin = new FooterPreferenceMixinCompat(mFragment, mLifecycle);
-    }
-
-    @Test
-    public void createFooter_screenNotAvailable_noCrash() {
-        assertThat(mMixin.createFooterPreference()).isNotNull();
-    }
-
-    @Test
-    public void createFooter_screenAvailable_canAttachToScreen() {
-        when(mFragment.getPreferenceScreen()).thenReturn(mScreen);
-
-        final FooterPreference preference = mMixin.createFooterPreference();
-
-        assertThat(preference).isNotNull();
-        verify(mScreen).addPreference(preference);
-    }
-
-    @Test
-    public void createFooter_screenAvailableDelayed_canAttachToScreen() {
-        final FooterPreference preference = mMixin.createFooterPreference();
-
-        mLifecycle.setPreferenceScreen(mScreen);
-
-        assertThat(preference).isNotNull();
-        verify(mScreen).addPreference(preference);
-    }
-
-    @Test
-    public void createFooterTwice_screenAvailable_replaceOldFooter() {
-        when(mFragment.getPreferenceScreen()).thenReturn(mScreen);
-
-        mMixin.createFooterPreference();
-        mMixin.createFooterPreference();
-
-        verify(mScreen).removePreference(any(FooterPreference.class));
-        verify(mScreen, times(2)).addPreference(any(FooterPreference.class));
-    }
-}
diff --git a/packages/SettingsLib/tests/robotests/src/com/android/settingslib/widget/FooterPreferenceMixinTest.java b/packages/SettingsLib/tests/robotests/src/com/android/settingslib/widget/FooterPreferenceMixinTest.java
deleted file mode 100644
index 7ae5d2d97cb89..0000000000000
--- a/packages/SettingsLib/tests/robotests/src/com/android/settingslib/widget/FooterPreferenceMixinTest.java
+++ /dev/null
@@ -1,101 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package com.android.settingslib.widget;
-
-import static com.google.common.truth.Truth.assertThat;
-
-import static org.mockito.ArgumentMatchers.any;
-import static org.mockito.Mockito.mock;
-import static org.mockito.Mockito.times;
-import static org.mockito.Mockito.verify;
-import static org.mockito.Mockito.when;
-
-import androidx.lifecycle.LifecycleOwner;
-import androidx.preference.PreferenceFragment;
-import androidx.preference.PreferenceManager;
-import androidx.preference.PreferenceScreen;
-
-import com.android.settingslib.core.lifecycle.Lifecycle;
-
-import org.junit.Before;
-import org.junit.Test;
-import org.junit.runner.RunWith;
-import org.mockito.Mock;
-import org.mockito.MockitoAnnotations;
-import org.robolectric.RobolectricTestRunner;
-import org.robolectric.RuntimeEnvironment;
-
-@RunWith(RobolectricTestRunner.class)
-public class FooterPreferenceMixinTest {
-
-    @Mock
-    private PreferenceFragment mFragment;
-    @Mock
-    private PreferenceScreen mScreen;
-
-    private LifecycleOwner mLifecycleOwner;
-    private Lifecycle mLifecycle;
-    private FooterPreferenceMixin mMixin;
-
-    @Before
-    public void setUp() {
-        MockitoAnnotations.initMocks(this);
-        mLifecycleOwner = () -> mLifecycle;
-        mLifecycle = new Lifecycle(mLifecycleOwner);
-        when(mFragment.getPreferenceManager()).thenReturn(mock(PreferenceManager.class));
-        when(mFragment.getPreferenceManager().getContext())
-                .thenReturn(RuntimeEnvironment.application);
-        mMixin = new FooterPreferenceMixin(mFragment, mLifecycle);
-    }
-
-    @Test
-    public void createFooter_screenNotAvailable_noCrash() {
-        assertThat(mMixin.createFooterPreference()).isNotNull();
-    }
-
-    @Test
-    public void createFooter_screenAvailable_canAttachToScreen() {
-        when(mFragment.getPreferenceScreen()).thenReturn(mScreen);
-
-        final FooterPreference preference = mMixin.createFooterPreference();
-
-        assertThat(preference).isNotNull();
-        verify(mScreen).addPreference(preference);
-    }
-
-    @Test
-    public void createFooter_screenAvailableDelayed_canAttachToScreen() {
-        final FooterPreference preference = mMixin.createFooterPreference();
-
-        mLifecycle.setPreferenceScreen(mScreen);
-
-        assertThat(preference).isNotNull();
-        verify(mScreen).addPreference(preference);
-    }
-
-    @Test
-    public void createFooterTwice_screenAvailable_replaceOldFooter() {
-        when(mFragment.getPreferenceScreen()).thenReturn(mScreen);
-
-        mMixin.createFooterPreference();
-        mMixin.createFooterPreference();
-
-        verify(mScreen).removePreference(any(FooterPreference.class));
-        verify(mScreen, times(2)).addPreference(any(FooterPreference.class));
-    }
-
-}