update: remove unintentional changes

supertokens_python/framework/flask/flask_middleware.py

@@ -60,7 +60,7 @@ def _():
             if result is not None:
                 if isinstance(result, FlaskResponse):
                     return result.response
-                raise Exception(f"Should never come here, {type(result)=}")
+                raise Exception("Should never come here")
             return None
 
         @app.after_request