Fix result -> resp typo in unset_keys

Change-Id: I07b0ea54993d5b00060e1dfcdfc10663d091254b
Remove unused "import sys"

Cleaning up with pyflakes.

Change-Id: I24878f1bb1693af13b2a7f0f7d6fe455f8747e91
Merge "Remove unused "import sys""
Merge "Fix result -> resp typo in unset_keys"