mm/zsmalloc.c: remove useless line in obj_free()

Signed-off-by: Hui Zhu <zhuhui@xiaomi.com>
Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Cc: Minchan Kim <minchan@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

mm/zsmalloc.c

@@ -1429,8 +1429,6 @@ static void obj_free(struct zs_pool *pool, struct size_class *class,
 	struct page *first_page, *f_page;
 	unsigned long f_objidx, f_offset;
 	void *vaddr;
-	int class_idx;
-	enum fullness_group fullness;
 
 	BUG_ON(!obj);
 
@@ -1438,7 +1436,6 @@ static void obj_free(struct zs_pool *pool, struct size_class *class,
 	obj_to_location(obj, &f_page, &f_objidx);
 	first_page = get_first_page(f_page);
 
-	get_zspage_mapping(first_page, &class_idx, &fullness);
 	f_offset = obj_idx_to_offset(f_page, f_objidx, class->size);
 
 	vaddr = kmap_atomic(f_page);