fix for unused exception var issue

Author: utsabc

src/arguments/api_test.py

@@ -19,7 +19,7 @@ def get_request(cls):
             try:
                 request_headers = json.loads(input_headers)
             # If Exception Occurs while Parsing Headers Printing info    
-            except Exception as ex:
+            except Exception:
                 print("Failed to parse Input Headers")