tools: ignore one warning message

hulk inclusion
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I7DNAP
CVE: NA

--------------------------------

Ignore one warning messages:
rmmod: ERROR: Module localip is not currently loaded
Signed-off-by: NLiu Jian <liujian56@huawei.com>

tools/netacc/net-acc

@@ -27,7 +27,7 @@ if [[ "$CMD"X == "enableX" ]]; then
 	/usr/sbin/tuned_acc/redis_acc enable
 elif [[ "$CMD"X == "disableX" ]]; then
 	/usr/sbin/tuned_acc/redis_acc disable
-	rmmod localip
+	rmmod localip 2>/dev/null
 	exit 0
 else
 	usage;