Change-Id: I7e13486a6bd444557dbcb98ba794d6d335f25882
Reviewed-by: Andy Nichols <andy.nichols@digia.com>

libsdl tries to pull in mesa, so workaround was added to machines
configs to prevent that. Now remove dependency to libgl from libsdl
that was causing that.

Change-Id: I425aa45cdc32842d573354eaaab7ed67ee5bb7b5
Reviewed-by: Samuli Piippo <samuli.piippo@digia.com>