lightnvm: pblk: remove dead code in pblk_recov_l2p

Remove the call to pblk_line_replace_data as it returns
directly because we have not set l_mg->data_next yet.

Signed-off-by: Hans Holmberg <hans.holmberg@cnexlabs.com>
Reviewed-by: Javier González <javier@javigon.com>
Signed-off-by: Matias Bjørling <mb@lightnvm.io>
Signed-off-by: Jens Axboe <axboe@kernel.dk>