drm: Remove memory debugging infrastructure.

It hasn't been used in ages, and having the user tell your how much
memory is being freed at free time is a recipe for disaster even if it
was ever used.

Signed-off-by: Eric Anholt <eric@anholt.net>
diff --git a/drivers/gpu/drm/drm_hashtab.c b/drivers/gpu/drm/drm_hashtab.c
index ac35145..f36b21c 100644
--- a/drivers/gpu/drm/drm_hashtab.c
+++ b/drivers/gpu/drm/drm_hashtab.c
@@ -46,8 +46,7 @@
 	ht->table = NULL;
 	ht->use_vmalloc = ((ht->size * sizeof(*ht->table)) > PAGE_SIZE);
 	if (!ht->use_vmalloc) {
-		ht->table = drm_calloc(ht->size, sizeof(*ht->table),
-				       DRM_MEM_HASHTAB);
+		ht->table = kcalloc(ht->size, sizeof(*ht->table), GFP_KERNEL);
 	}
 	if (!ht->table) {
 		ht->use_vmalloc = 1;
@@ -200,8 +199,7 @@
 		if (ht->use_vmalloc)
 			vfree(ht->table);
 		else
-			drm_free(ht->table, ht->size * sizeof(*ht->table),
-				 DRM_MEM_HASHTAB);
+			kfree(ht->table);
 		ht->table = NULL;
 	}
 }