gitlab-multi-runnerのログが煩いのでなんとかしたい

gitlab-multi-runnerがGitlabのapiへアクセスするログがひたすら３秒ごとに流れるのをなんとかしたいです。
Gitlabはnginxで動かしています。
リモートアドレスがサーバー自身のログをオフにしようと考えたのですが、ログが表示されないと同時にgitlab-multi-runnerのビルドまで行われなくなってしまいました。
nginxの設定にお知恵をお貸しいただけないでしょうか？

nginx
1if ($remote_addr= '192.168.1.X') {
2  access_log off;
3}

ログ

log
1192.168.1.X - - [16/Dec/2015:03:31:01 +0900] "POST /ci/api/v1/builds/register.json HTTP/1.1" 404 27 "-" "Go 1.1 package http"
2192.168.1.X - - [16/Dec/2015:03:31:04 +0900] "POST /ci/api/v1/builds/register.json HTTP/1.1" 404 27 "-" "Go 1.1 package http"
3192.168.1.X - - [16/Dec/2015:03:31:07 +0900] "POST /ci/api/v1/builds/register.json HTTP/1.1" 404 27 "-" "Go 1.1 package http"
4192.168.1.X - - [16/Dec/2015:03:31:10 +0900] "POST /ci/api/v1/builds/register.json HTTP/1.1" 404 27 "-" "Go 1.1 package http"
5192.168.1.X - - [16/Dec/2015:03:31:13 +0900] "POST /ci/api/v1/builds/register.json HTTP/1.1" 404 27 "-" "Go 1.1 package http"
6192.168.1.X - - [16/Dec/2015:03:31:16 +0900] "POST /ci/api/v1/builds/register.json HTTP/1.1" 404 27 "-" "Go 1.1 package http"
7192.168.1.X - - [16/Dec/2015:03:31:19 +0900] "POST /ci/api/v1/builds/register.json HTTP/1.1" 404 27 "-" "Go 1.1 package http"
8192.168.1.X - - [16/Dec/2015:03:31:22 +0900] "POST /ci/api/v1/builds/register.json HTTP/1.1" 404 27 "-" "Go 1.1 package http"
9192.168.1.X - - [16/Dec/2015:03:31:25 +0900] "POST /ci/api/v1/builds/register.json HTTP/1.1" 404 27 "-" "Go 1.1 package http"
10192.168.1.X - - [16/Dec/2015:03:31:28 +0900] "POST /ci/api/v1/builds/register.json HTTP/1.1" 404 27 "-" "Go 1.1 package http"