Remove duplicate strings.

"Yes" and "no" were redefined many times with no clear benefit, so this
consolidates them into one definition.

Bug: 243843096
Test: Build, install, and open the Settings app
Test: atest SettingsRoboTests
Change-Id: I5f84d09f223efd478461ded93aeac82bf7b128d8

src/com/android/settings/accessibility/VibrationPreferenceController.java

@@ -44,9 +44,6 @@ public class VibrationPreferenceController extends BasePreferenceController {
     public CharSequence getSummary() {
         final boolean isVibrateOn = Settings.System.getInt(mContext.getContentResolver(),
                 Settings.System.VIBRATE_ON, ON) == ON;
-        return mContext.getText(
-                isVibrateOn
-                        ? R.string.accessibility_vibration_settings_state_on
-                        : R.string.accessibility_vibration_settings_state_off);
+        return mContext.getText(isVibrateOn ? R.string.on : R.string.off);
     }
 }