drm/i915/skl: CS flips are not supported with execlists

And skl only works in execlist mode, not in legacy ring submission.

Therefore remove dead code.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
1 file changed