Remove cityhash.gyp

According to https://code.google.com/p/skia/issues/detail?id=1286 it should be fine to remove this empty gyp file now.

BUG=None
TEST=None
R=epoger@google.com

Author: tfarina@chromium.org

Review URL: https://codereview.chromium.org/102603004

git-svn-id: http://skia.googlecode.com/svn/trunk/gyp@12481 2bbb7eff-a529-9590-31e7-b0007b416f81
1 file changed