[IPV4]: Remove no longer used snmp4_icmp_list.

This was obsoleted by a previous change, but the removal was
forgotten.

Reported by David Howells and David Stevens.
Signed-off-by: David S. Miller <davem@davemloft.net>

net/ipv4/proc.c

@@ -121,14 +121,6 @@ static const struct snmp_mib snmp4_ipextstats_list[] = {
 	SNMP_MIB_SENTINEL
 };
 
-static const struct snmp_mib snmp4_icmp_list[] = {
-	SNMP_MIB_ITEM("InMsgs", ICMP_MIB_INMSGS),
-	SNMP_MIB_ITEM("InErrors", ICMP_MIB_INERRORS),
-	SNMP_MIB_ITEM("OutMsgs", ICMP_MIB_OUTMSGS),
-	SNMP_MIB_ITEM("OutErrors", ICMP_MIB_OUTERRORS),
-	SNMP_MIB_SENTINEL
-};
-
 static struct {
 	char *name;
 	int index;