fix pep8

dt3310321 · dt3310321 · commit e657b33f326f · 2017-10-23T21:06:49.000+08:00
diff --git a/qcloud_cos/demo.py b/qcloud_cos/demo.py
@@ -75,4 +75,3 @@
     print e.get_resource_location()
     print e.get_trace_id()
     print e.get_request_id()
-
