Delete dead code

The only user was deleted in ag/20445927.

Bug: N/A
Test: TH
Change-Id: I695409f2e925ba003b946809976ef534b5b36194

tests/utils/hostutils/src/com/android/fsverity/AddFsVerityCertRule.java

@@ -1,77 +0,0 @@
-/*
- * Copyright (C) 2021 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.fsverity;
-
-import static com.google.common.truth.Truth.assertThat;
-import static com.google.common.truth.Truth.assertWithMessage;
-
-import static org.junit.Assume.assumeTrue;
-
-import com.android.tradefed.device.DeviceNotAvailableException;
-import com.android.tradefed.device.ITestDevice;
-import com.android.tradefed.log.LogUtil;
-import com.android.tradefed.testtype.junit4.BaseHostJUnit4Test;
-import com.android.tradefed.util.CommandResult;
-import com.android.tradefed.util.CommandStatus;
-
-import org.junit.rules.ExternalResource;
-
-public final class AddFsVerityCertRule extends ExternalResource {
-
-    private static final String APK_VERITY_STANDARD_MODE = "2";
-
-    private final BaseHostJUnit4Test mHost;
-    private final String mCertPath;
-    private String mKeyId;
-
-    public AddFsVerityCertRule(BaseHostJUnit4Test host, String certPath) {
-        mHost = host;
-        mCertPath = certPath;
-    }
-
-    @Override
-    protected void before() throws Throwable {
-        ITestDevice device = mHost.getDevice();
-        String apkVerityMode = device.getProperty("ro.apk_verity.mode");
-        assumeTrue(device.getLaunchApiLevel() >= 30
-                || APK_VERITY_STANDARD_MODE.equals(apkVerityMode));
-
-        String keyId = executeCommand(
-                "mini-keyctl padd asymmetric fsv_test .fs-verity < " + mCertPath).trim();
-        assertThat(keyId).matches("^\\d+$");
-        mKeyId = keyId;
-    }
-
-    @Override
-    protected void after() {
-        if (mKeyId == null) return;
-        try {
-            executeCommand("mini-keyctl unlink " + mKeyId + " .fs-verity");
-        } catch (DeviceNotAvailableException e) {
-            LogUtil.CLog.e(e);
-        }
-        mKeyId = null;
-    }
-
-    private String executeCommand(String cmd) throws DeviceNotAvailableException {
-        CommandResult result = mHost.getDevice().executeShellV2Command(cmd);
-        assertWithMessage("`" + cmd + "` failed: " + result.getStderr())
-                .that(result.getStatus())
-                .isEqualTo(CommandStatus.SUCCESS);
-        return result.getStdout();
-    }
-}