drm/xe: Remove NULL check of lrc->bo in xe_lrc_snapshot_capture()

drm/xe: Remove NULL check of lrc->bo in xe_lrc_snapshot_capture()

- lrc->bo NULL check is not needed in xe_lrc_snapshot_capture() as
  its already been taken care of in xe_lrc_init().

Signed-off-by: Apoorva Singh <apoorva.singh@intel.com>
Acked-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Nirmoy Das <nirmoy.das@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240816080355.897256-1-apoorva.singh@intel.com
Signed-off-by: Nirmoy Das <nirmoy.das@intel.com>