Remove the SCREEN_BRIGHTNESS_LEVEL setting.

Bug: 177241166
Test: manual test and unit test
Change-Id: I6903d568b1e641946faa248425ec685d4a42485d
(cherry picked from commit d9f1fd1c99df8ac49ae753a11053bd22ff81cfba)

core/java/android/provider/Settings.java

@@ -16608,12 +16608,6 @@ public final class Settings {
              */
             public static final String WEAR_PLATFORM_MR_NUMBER = "wear_platform_mr_number";
 
-            /**
-             * The different levels of screen brightness the user can select.
-             * @hide
-             */
-            public static final String SCREEN_BRIGHTNESS_LEVEL = "screen_brightness_level";
-
             /**
              * The mobile signal detector setting.
              * @hide

packages/SettingsProvider/res/values/defaults.xml

@@ -303,9 +303,6 @@
     <!-- This value is used for the default system capabilities used on LE device. -->
     <string name="def_wearable_leSystemCapabilities" translatable="false">1</string>
 
-    <!-- Brightness levels, on a 0-255 scale -->
-    <string name="def_wearable_brightnessLevels" translatable="false">255,204,153,102,51</string>
-
     <!-- Whether to allow mobile signal detector by default. -->
     <bool name="def_wearable_mobileSignalDetectorAllowed">true</bool>
 

packages/SettingsProvider/src/com/android/providers/settings/SettingsProvider.java

@@ -5293,11 +5293,6 @@ public class SettingsProvider extends ContentProvider {
                     initGlobalSettingsDefaultValForWearLocked(
                             Global.Wearable.WEAR_PLATFORM_MR_NUMBER,
                             SystemProperties.getInt("ro.cw_build.platform_mr", 0));
-                    initGlobalSettingsDefaultValForWearLocked(
-                            Settings.Global.Wearable.SCREEN_BRIGHTNESS_LEVEL,
-                            getContext()
-                                    .getResources()
-                                    .getString(R.string.def_wearable_brightnessLevels));
                     initGlobalSettingsDefaultValForWearLocked(
                             Settings.Global.Wearable.MOBILE_SIGNAL_DETECTOR,
                             getContext()

packages/SettingsProvider/test/src/android/provider/SettingsBackupTest.java

@@ -632,7 +632,6 @@ public class SettingsBackupTest {
                     Settings.Global.Wearable.SYSTEM_CAPABILITIES,
                     Settings.Global.Wearable.SYSTEM_EDITION,
                     Settings.Global.Wearable.WEAR_PLATFORM_MR_NUMBER,
-                    Settings.Global.Wearable.SCREEN_BRIGHTNESS_LEVEL,
                     Settings.Global.Wearable.MOBILE_SIGNAL_DETECTOR,
                     Settings.Global.Wearable.AMBIENT_ENABLED,
                     Settings.Global.Wearable.AMBIENT_TILT_TO_WAKE,