elm_web: disable support for Webkit/EFL.
elm_web: disable support for Webkit/EFL.

Current git head require latest Webkit/EFL from svn. Waiting to update
the release tarball to go along with 1.9 release to re-enable it.

tasn/elementary,tasn/elementary,tasn/elementary,tasn/elementary,rvandegrift/elementary,FlorentRevest/Elementary,rvandegrift/elementary,FlorentRevest/Elementary,tasn/elementary,FlorentRevest/Elementary,FlorentRevest/Elementary,rvandegrift/elementary,rvandegrift/elementary