i965: Remove useless (harmful) assertion

The code already skips doing the depth stall on gen >= 8, and as we
enable new platforms this assertion will fail needlessly. Instead of
changing the caller, make this simple change.

Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Reviewed-by: Anuj Phogat <anuj.phogat@gmail.com>
1 file changed