io_uring: remove unused argument from io_rsrc_node_alloc

io_ring_ctx is not used in the function.

Signed-off-by: Usama Arif <usama.arif@bytedance.com>
Link: https://lore.kernel.org/r/20220127140444.4016585-1-usama.arif@bytedance.com


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