Migrate to from OnBackPressed to OnBackPressedDispatcher

Closes: https://github.com/CatimaLoyalty/Android/issues/1498

Signed-off-by: Aayush Gupta <aayushgupta219@gmail.com>

app/src/main/java/protect/card_locker/ManageGroupsActivity.java

@@ -71,11 +71,6 @@ public class ManageGroupsActivity extends CatimaAppCompatActivity implements Gro
         updateGroupList();
     }
 
-    @Override
-    public void onBackPressed() {
-        super.onBackPressed();
-    }
-
     private void updateGroupList() {
         mAdapter.swapCursor(DBHelper.getGroupCursor(mDatabase));
 
@@ -248,4 +243,4 @@ public class ManageGroupsActivity extends CatimaAppCompatActivity implements Gro
         AlertDialog dialog = builder.create();
         dialog.show();
     }
-}
+}