Add confirmation dialog when granting/revoking admin privileges.

Bug: 266548780
Test: atest UserDetailsSettingsTest
Change-Id: I222ab6cbda138f0df379e6b6986b5ac462479833

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

@@ -202,19 +202,4 @@ public final class UserDialogs {
                 .setNegativeButton(android.R.string.cancel, null)
                 .create();
     }
-
-    /**
-     * Creates a dialog to confirm that the admin privileges of the user should be revoked.
-     *
-     * @param onConfirmListener Callback object for positive action
-     */
-    public static Dialog createConfirmRevokeAdmin(Context context,
-            DialogInterface.OnClickListener onConfirmListener) {
-        return new AlertDialog.Builder(context)
-                .setTitle(R.string.user_revoke_admin_confirm_title)
-                .setMessage(R.string.user_revoke_admin_confirm_message)
-                .setPositiveButton(R.string.remove, onConfirmListener)
-                .setNegativeButton(android.R.string.cancel, null)
-                .create();
-    }
 }