Enable ignored test case

UserManager interface changed, we need to handle it in ShadowUserManager

Bug: 215071960
Change-Id: Ieacda685f0160e5ab1f3a35a3f9f6aade403e39a
Test: robotest

tests/robotests/src/com/android/settings/development/qstile/DevelopmentTilesTest.java

@@ -30,7 +30,6 @@ import android.service.quicksettings.Tile;
 import com.android.settingslib.development.DevelopmentSettingsEnabler;
 
 import org.junit.Before;
-import org.junit.Ignore;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.mockito.Mock;
@@ -62,7 +61,6 @@ public class DevelopmentTilesTest {
     }
 
     @Test
-    @Ignore
     public void refresh_devOptionIsDisabled_shouldResetTileValue() {
         final ComponentName cn = new ComponentName(
                 mService.getPackageName(), mService.getClass().getName());