maple_tree: delete one of the two identical checks

There are two identical checks, delete one of them.

Link: https://lkml.kernel.org/r/20231120070937.35481-5-zhangpeng.00@bytedance.com
Signed-off-by: Peng Zhang <zhangpeng.00@bytedance.com>
Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Cc: Dan Carpenter <dan.carpenter@linaro.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

lib/maple_tree.c

@@ -4117,9 +4117,6 @@ static inline bool mas_wr_append(struct ma_wr_state *wr_mas,
 	if (mt_in_rcu(mas->tree))
 		return false;
 
-	if (mas->offset != mas->end)
-		return false;
-
 	end = mas->end;
 	if (mas->offset != end)
 		return false;