drm/qxl: drop ttm_page_alloc.h include

Not needed as far as I can see.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Dave Airlie <airlied@redhat.com>
Reviewed-by: Madhav Chauhan <madhav.chauhan@amd.com>
Tested-by: Huang Rui <ray.huang@amd.com>
Link: https://patchwork.freedesktop.org/patch/397084/?series=83051&rev=1

drivers/gpu/drm/qxl/qxl_ttm.c

@@ -32,7 +32,6 @@
 #include <drm/ttm/ttm_bo_api.h>
 #include <drm/ttm/ttm_bo_driver.h>
 #include <drm/ttm/ttm_module.h>
-#include <drm/ttm/ttm_page_alloc.h>
 #include <drm/ttm/ttm_placement.h>
 
 #include "qxl_drv.h"