drm/i915/request: Remove unused variables

The clang_analyzer complains as follows:
drivers/gpu/drm/i915/i915_request.c:2119:2 warning:
Value stored to 'x' is never read

Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: yong yiran <yong.yiran@zte.com.cn>

drivers/gpu/drm/i915/i915_request.c

@@ -2084,7 +2084,6 @@ void i915_request_show(struct drm_printer *m,
 {
 	const char *name = rq->fence.ops->get_timeline_name((struct dma_fence *)&rq->fence);
 	char buf[80] = "";
-	int x = 0;
 
 	/*
 	 * The prefix is used to show the queue status, for which we use
@@ -2116,8 +2115,6 @@ void i915_request_show(struct drm_printer *m,
 	 *      from the lists
 	 */
 
-	x = print_sched_attr(&rq->sched.attr, buf, x, sizeof(buf));
-
 	drm_printf(m, "%s%.*s%c %llx:%lld%s%s %s @ %dms: %s\n",
 		   prefix, indent, "                ",
 		   queue_status(rq),