drm/xe: Delete unused GuC submission_state.suspend

[ Upstream commit 3f371a98 ]

GuC submission_state.suspend is unused, delete it.

Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Himal Prasad Ghimiray <himal.prasad.ghimiray@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240425054747.1918811-1-matthew.brost@intel.com


Stable-dep-of: 2d2be279 ("drm/xe: fix UAF around queue destruction")
Signed-off-by: Sasha Levin <sashal@kernel.org>