Fix the syntax error in E2E python script. (#274)

Author: mashhurs

.buildkite/scripts/e2e-pipeline/main.py

@@ -64,7 +64,7 @@ def main(skip_setup=False, integrations=[]):
 
 if __name__ == "__main__":
     parser = argparse.ArgumentParser()
-    parser.add_argument('--skip-setup, 'action='store_false')
+    parser.add_argument('--skip-setup', action='store_false')
     parser.add_argument('--integrations')
     args = parser.parse_args()