drm/i915/active: remove useless i915_utils.h include

Not needed.
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/52b1cf56c16bf669a1357ce81d9232c5480914a4.1639142167.git.jani.nikula@intel.com

drivers/gpu/drm/i915/i915_active_types.h

@@ -15,8 +15,6 @@
 #include <linux/rcupdate.h>
 #include <linux/workqueue.h>
 
-#include "i915_utils.h"
-
 struct i915_active_fence {
 	struct dma_fence __rcu *fence;
 	struct dma_fence_cb cb;