Fix false error message when deleting reminders with duplicate IDs

Author: oliveman-au

bot/exts/utils/reminders.py

@@ -678,7 +678,7 @@ async def delete_reminder(self, ctx: Context, ids: Greedy[int]) -> None:
             title = random.choice(POSITIVE_REPLIES)
             deletion_message = f"Successfully deleted the following reminder(s): {', '.join(deleted_ids)}"
 
-            if len(deleted_ids) != len(ids):
+            if len(deleted_ids) != len(set(ids)):
                 deletion_message += (
                     "\n\nThe other reminder(s) could not be deleted as they're either locked, "
                     "belong to someone else, or don't exist."