Fix Flake8 errors

scrapy/pipelines/files.py

@@ -13,7 +13,6 @@ from collections import defaultdict
 from email.utils import parsedate_tz, mktime_tz
 from ftplib import FTP
 from io import BytesIO
-from six.moves.urllib.parse import urlparse
 from urllib.parse import urlparse
 
 from twisted.internet import defer, threads
@@ -276,7 +275,7 @@ class FTPFilesStore(object):
         self.password = u.password or self.FTP_PASSWORD
         self.basedir = u.path.rstrip('/')
 
-    def persist_file(self, path, buf, info, meta=None, headers=None): 
+    def persist_file(self, path, buf, info, meta=None, headers=None):
         path = '%s/%s' % (self.basedir, path)
         return threads.deferToThread(
             ftp_store_file, path=path, file=buf,

scrapy/utils/test.py

@@ -67,7 +67,7 @@ def get_gcs_content_and_delete(bucket, path):
 
 
 def get_ftp_content_and_delete(
-        path, host, port,username,
+        path, host, port, username,
         password, use_active_mode=False):
     from ftplib import FTP
     ftp = FTP()