Remove custom updateState() if it's just setting summary

Change-Id: I6311d67d6ba11961a6814b91dcd8e37a2e17df40
Fixes: 73950519
Test: rerun robotests

src/com/android/settings/applications/appinfo/DrawOverlayDetailPreferenceController.java

@@ -21,7 +21,6 @@ import static android.Manifest.permission.SYSTEM_ALERT_WINDOW;
 import android.content.Context;
 import android.content.pm.PackageInfo;
 import android.os.UserManager;
-import android.support.v7.preference.Preference;
 
 import com.android.settings.SettingsPreferenceFragment;
 
@@ -50,11 +49,6 @@ public class DrawOverlayDetailPreferenceController extends AppInfoPreferenceCont
         return DISABLED_FOR_USER;
     }
 
-    @Override
-    public void updateState(Preference preference) {
-        preference.setSummary(getSummary());
-    }
-
     @Override
     protected Class<? extends SettingsPreferenceFragment> getDetailFragmentClass() {
         return DrawOverlayDetails.class;