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/language/LanguageAndInputSettingsTest.java

@@ -45,7 +45,6 @@ import com.android.settingslib.core.AbstractPreferenceController;
 import com.android.settingslib.core.lifecycle.Lifecycle;
 
 import org.junit.Before;
-import org.junit.Ignore;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.mockito.Answers;
@@ -115,7 +114,6 @@ public class LanguageAndInputSettingsTest {
         assertThat(controllers.isEmpty()).isFalse();
     }
 
-    @Ignore
     @Test
     public void testNonIndexableKeys_existInXmlLayout() {
         final Context context = spy(RuntimeEnvironment.application);