Update 50unattended-upgrades

apt/files/50unattended-upgrades

@@ -15,7 +15,6 @@ Unattended-Upgrade::Origins-Pattern {
 	"origin=packages.gitlab.com/gitlab/gitlab-ce,codename=${distro_codename},label=gitlab-ce";
 	"origin=packages.gitlab.com/gitlab/gitlab-ee,codename=${distro_codename},label=gitlab-ee";
 	"origin=deb.knot-dns.cz,site=deb.knot-dns.cz,component=main";
-	"origin=packagecloud.io/go-graphite/stable,label=stable,component=main,archive=${distro_codename}";
 };
 
 Unattended-Upgrade::Automatic-Reboot "false";