refactor(services): delete is_enabled() from gitea

selfprivacy_api/services/gitea/__init__.py

@@ -54,11 +54,6 @@ class Gitea(Service):
     def get_backup_description() -> str:
         return "Git repositories, database and user data."
 
-    @staticmethod
-    def is_enabled() -> bool:
-        with ReadUserData() as user_data:
-            return user_data.get("gitea", {}).get("enable", False)
-
     @staticmethod
     def get_status() -> ServiceStatus:
         """