drm/msm/dpu: Remove bogus comment

This comment doesn't make any sense, remove it.
Suggested-by: Jordan Crouse <jcrouse@codeaurora.org>
Reviewed-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190528182657.246714-1-sean@poorly.run

drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c

@@ -244,7 +244,6 @@ static int dpu_kms_debugfs_init(struct msm_kms *kms, struct drm_minor *minor)
 	if (IS_ERR_OR_NULL(entry))
 		return -ENODEV;
 
-	/* allow root to be NULL */
 	debugfs_create_x32(DPU_DEBUGFS_HWMASKNAME, 0600, entry, p);
 
 	dpu_debugfs_danger_init(dpu_kms, entry);