Remove old touch-event based hover/active tests.

All touch based state is set via gesture events so there is no need for these tests.

BUG=325930

Review URL: https://codereview.chromium.org/211423002

git-svn-id: svn://svn.chromium.org/blink/trunk@169985 bbb929c8-8fbe-4397-9dbb-9b2b20218538