Delete unix_test_app directory and its contents.

Leon added this in March 2011 ( http://code.google.com/p/skia/source/detail?spec=svn938&r=938 ), but it's not maintained anymore.
Review URL: https://codereview.appspot.com/5876055

git-svn-id: http://skia.googlecode.com/svn/trunk@3463 2bbb7eff-a529-9590-31e7-b0007b416f81
3 files changed