remove unused variable name

Author: sjanssen2

qiita_client/tests/test_qiita_client.py

@@ -504,7 +504,7 @@ def test_delete_file_from_central(self):
             self.clean_up_files.append(fp_test)
             try:
                 self.qclient.push_file_to_central(fp_test)
-            except ForbiddenError as e:
+            except ForbiddenError:
                 # previous test instances might not have cleaned this file
                 # properly if ran with https protocol
                 pass