Don't let profiles open the UserSettings overflow

Really, profiles aren't expected to open Settings at all. But if they
do somehow, the overflow shouldn't appear.

Bug: 352542820
Flag: EXEMPT bugfix
Test: Try to access the overflow of the work profile by launching its Settings in
adb shell am start --user 10 'com.android.settings/.Settings\$UserSettingsActivity'

Change-Id: I5e4c095cda3e19fa5c63c2c550a526f5da8ec5c1

src/com/android/settings/users/UserSettings.java

@@ -465,7 +465,7 @@ public class UserSettings extends SettingsPreferenceFragment
     public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
         int pos = 0;
         if (!isCurrentUserAdmin() && (canSwitchUserNow() || Flags.newMultiuserSettingsUx())
-                && !isCurrentUserGuest()) {
+                && !isCurrentUserGuest() && !mUserManager.isProfile()) {
             String nickname = mUserManager.getUserName();
             MenuItem removeThisUser = menu.add(0, MENU_REMOVE_USER, pos++,
                     getResources().getString(R.string.user_remove_user_menu, nickname));