Revert "Test Fix SettingRobolectricTest Fail"

This reverts commit 818f77cd1f.

Reason for revert: Underlying issue fixed in ag/23454315.

Bug: b/275023433
Test: atest SettingsGlobalRoboTests

Change-Id: I1af272efd00b3c5bd35310512f5712d5d1c7d834

tests/robotests/src/com/android/settings/notification/ScreenLockSoundPreferenceControllerTest.java

@@ -31,7 +31,6 @@ import androidx.preference.PreferenceScreen;
 import androidx.preference.SwitchPreference;
 
 import org.junit.Before;
-import org.junit.Ignore;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.mockito.Mock;
@@ -76,7 +75,6 @@ public class ScreenLockSoundPreferenceControllerTest {
         assertThat(mController.isAvailable()).isTrue();
     }
 
-    @Ignore
     @Test
     @Config(qualifiers = "mcc999")
     public void isAvailable_whenNotVisible_isFalse() {