remove fcm token

notifications/utils.py

@@ -15,3 +15,13 @@ def register_fcm_token(user_id, registration_id, device_id, device_type):
                                                              'registration_id': registration_id})
     return device
 
+
+def remove_fcm_token(user_id: int, access_token: str, registration_id) -> None:
+    """
+    remove access_token and registration_token
+    """
+    try:
+        # remove fcm token for this device
+        FCMDevice.objects.filter(user_id=user_id).delete()
+    except Exception as e:
+        print(e)