Merge "Remove unwanted test dependency zake"

test-requirements.txt

@@ -22,4 +22,3 @@ sphinx!=1.2.0,!=1.3b1,<1.3,>=1.1.2 # BSD
 testrepository>=0.0.18 # Apache-2.0/BSD
 testscenarios>=0.4 # Apache-2.0/BSD
 testtools>=1.4.0 # MIT
-zake>=0.1.6 # Apache-2.0