block/merge: remove unnecessary min() with UINT_MAX

In bvec_split_segs(), max_bytes is an unsigned, so it must be less than
or equal to UINT_MAX. Remove the unnecessary min().

Prior to commit 67927d22 ("block/merge: count bytes instead of
sectors"), the min() was with UINT_MAX >> 9, so it did have an effect.

Signed-off-by: Caleb Sander Mateos <csander@purestorage.com>
Link: https://lore.kernel.org/r/20250214193637.234702-1-csander@purestorage.com


Signed-off-by: Jens Axboe <axboe@kernel.dk>