Merge "Remove openstackdocstheme from test-requirements.txt file"

test-requirements.txt

@@ -8,7 +8,6 @@ coverage!=4.4,>=4.0 # Apache-2.0
 doc8>=0.6.0 # Apache-2.0
 extras>=1.0.0 # MIT
 hacking>=0.10.0,<1.1.0
-openstackdocstheme>=1.18.1 # Apache-2.0
 oslo.log>=3.36.0 # Apache-2.0
 oslotest>=3.2.0 # Apache-2.0
 PrettyTable<0.8,>=0.7.1 # BSD