REMOVE: mention if error being raised

Signed-off-by: Segelzwerg <25705862+Segelzwerg@users.noreply.github.com>

whist_server/services/game_info_service.py

@@ -28,6 +28,6 @@ def add(cls, info: dict) -> None:
     def get(cls):
         """
         Retrieves the game info object.
-        :return: Game info object if it is exists. Else raises GameInfoNotSetError.
+        :return: Game info object if it is exists. Else None.
         """
         return cls._info