Update post_operation.py

Author: shriram192

servicex_codegen/post_operation.py

@@ -35,7 +35,7 @@
 import zipfile
 from tempfile import TemporaryDirectory
 
-from flask import Response, current_app, request
+from flask import Response, request
 from flask_restful import Resource
 from requests_toolbelt import MultipartEncoder