io_uring: fix function args for !CONFIG_NET

Fix build errors when CONFIG_NET is not set/enabled:

../fs/io_uring.c:5472:10: error: too many arguments to function ‘io_sendmsg’
../fs/io_uring.c:5474:10: error: too many arguments to function ‘io_send’
../fs/io_uring.c:5484:10: error: too many arguments to function ‘io_recvmsg’
../fs/io_uring.c:5486:10: error: too many arguments to function ‘io_recv’
../fs/io_uring.c:5510:9: error: too many arguments to function ‘io_accept’
../fs/io_uring.c:5518:9: error: too many arguments to function ‘io_connect’

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: io-uring@vger.kernel.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>