Pre-fixup for nav up button

- Remove SettingsDrawerActivity.EXTRA_SHOW_MENU and force up nav button
  to always show. The button doesn't do anything yet. It just finishes
  current activity.
- Remove dead code about suggestions

Change-Id: I61fa9fefbaa9bced841a05969544b1c824c564ce
Bug: 72337421
Test: rebuild

src/com/android/settings/deviceinfo/storage/UserProfileController.java

@@ -85,7 +85,6 @@ public class UserProfileController extends AbstractPreferenceController implemen
             Intent intent = Utils.onBuildStartFragmentIntent(mContext,
                     StorageProfileFragment.class.getName(), args, null, 0,
                     mUser.name, false, MetricsProto.MetricsEvent.DEVICEINFO_STORAGE);
-            intent.putExtra(SettingsDrawerActivity.EXTRA_SHOW_MENU, true);
             mContext.startActivity(intent);
             return true;
         }