Remove SKIP_ACE as suggested by @PeterBowman
Remove SKIP_ACE as suggested by @PeterBowman

Remove SKIP_ACE as suggested by @PeterBowman at https://github.com/robotology/QA/issues/148#issuecomment-258177359 [thanks!]
jgvictores/example-yarp-plugin-gtest,jgvictores/example-yarp-plugin-gtest,jgvictores/example-yarp-plugin-gtest,jgvictores/example-yarp-plugin-gtest