drm/msm: Remove unused field in submit

Noticed this was unused and never set.
Signed-off-by: Rob Clark <robdclark@chromium.org>
Link: https://lore.kernel.org/r/20220225202614.225197-2-robdclark@gmail.comSigned-off-by: Rob Clark <robdclark@chromium.org>

drivers/gpu/drm/msm/msm_gem.h

@@ -329,7 +329,6 @@ struct msm_gem_submit {
 	bool valid;         /* true if no cmdstream patching needed */
 	bool in_rb;         /* "sudo" mode, copy cmds into RB */
 	struct msm_ringbuffer *ring;
-	struct msm_file_private *ctx;
 	unsigned int nr_cmds;
 	unsigned int nr_bos;
 	u32 ident;	   /* A "identifier" for the submit for logging */

drivers/gpu/drm/msm/msm_gpu.h

@@ -21,6 +21,7 @@
 struct msm_gem_submit;
 struct msm_gpu_perfcntr;
 struct msm_gpu_state;
+struct msm_file_private;
 
 struct msm_gpu_config {
 	const char *ioname;