Revert "block: split bio if the only bvec's length is > SZ_4K"

We really don't need this, as the slow path will do the right thing
anyway.

This reverts commit 6952a7f8446ee85ea9d10ab87b64797a031eaae3.

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