flake8 fixes

Author: Peter Amstutz

wes_service/arvados_wes.py

@@ -13,7 +13,6 @@
 import shutil
 
 from wes_service.util import visit, WESBackend
-from werkzeug.utils import secure_filename
 
 
 class MissingAuthorization(Exception):

wes_service/cwl_runner.py

@@ -2,13 +2,9 @@
 import json
 import os
 import subprocess
-import tempfile
 import urllib
 import uuid
 
-import connexion
-from werkzeug.utils import secure_filename
-
 from wes_service.util import WESBackend
 
 

wes_service/util.py

@@ -6,6 +6,7 @@
 import connexion
 from werkzeug.utils import secure_filename
 
+
 def visit(d, op):
     """Recursively call op(d) for all list subelements and dictionary 'values' that d may have."""
     op(d)