net: sysctl: remove redundant #ifdef CONFIG_NET

CONFIG_NET is a bool option, and this file is compiled only when
CONFIG_NET=y.

Remove #ifdef CONFIG_NET, which we know it is always met.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Link: https://lore.kernel.org/r/20210125231421.105936-1-masahiroy@kernel.orgSigned-off-by: Jakub Kicinski <kuba@kernel.org>

net/core/sysctl_net_core.c

@@ -309,7 +309,6 @@ proc_dolongvec_minmax_bpf_restricted(struct ctl_table *table, int write,
 #endif
 
 static struct ctl_table net_core_table[] = {
-#ifdef CONFIG_NET
 	{
 		.procname	= "wmem_max",
 		.data		= &sysctl_wmem_max,
@@ -507,7 +506,6 @@ static struct ctl_table net_core_table[] = {
 		.proc_handler	= set_default_qdisc
 	},
 #endif
-#endif /* CONFIG_NET */
 	{
 		.procname	= "netdev_budget",
 		.data		= &netdev_budget,