Chore: remove unused variable pruned_memory (#23514)

api/controllers/service_api/app/file.py

@@ -20,18 +20,17 @@ class FileApi(Resource):
     @validate_app_token(fetch_user_arg=FetchUserArg(fetch_from=WhereisUserArg.FORM))
     @marshal_with(file_fields)
     def post(self, app_model: App, end_user: EndUser):
-        file = request.files["file"]
-
         # check file
         if "file" not in request.files:
             raise NoFileUploadedError()
 
-        if not file.mimetype:
-            raise UnsupportedFileTypeError()
-
         if len(request.files) > 1:
             raise TooManyFilesError()
 
+        file = request.files["file"]
+        if not file.mimetype:
+            raise UnsupportedFileTypeError()
+
         if not file.filename:
             raise FilenameNotExistsError