fix: remove sock_no_get/setsockopt stubs

When migrating to more recent long term v5.10 kernel, sock_no_setsockopt
and sock_no_getsockopt stubs are removed from the network socket
interface. Leaving setsockopt and getsockopt fields undefined in the
driver protocol operations as a remediation.

Change-Id: I7b40c798c465ff67b8de23b8849cbb7de36c9947
Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
diff --git a/main.c b/main.c
index b744311..4c99259 100644
--- a/main.c
+++ b/main.c
@@ -765,8 +765,6 @@
 		.ioctl = sock_no_ioctl,
 		.listen = sock_no_listen,
 		.shutdown = sock_no_shutdown,
-		.setsockopt = sock_no_setsockopt,
-		.getsockopt = sock_no_getsockopt,
 		.sendmsg = hf_sock_sendmsg,
 		.recvmsg = hf_sock_recvmsg,
 		.mmap = sock_no_mmap,