Retiring golang-vitess and golang-sigs-k8s-kustomize leaves

[Mikel Olasagasti]

golang-vitess and golang-sigs-k8s-kustomize were retired a while ago
leaving a few leave packages.

As reported in https://pagure.io/GoSIG/go-sig/issue/58 and discussed
in the go-sig meeting, these are the packages that will be retired in
a week if nobody complains:

golang-github-adalogics-fuzz-headers
golang-github-aquarapid-vaultlib
golang-github-buger-jsonparser
golang-github-martini-contrib-auth
golang-github-martini-contrib-gzip
golang-github-martini-contrib-render
golang-github-monochromegane-gitignore
golang-github-opentracing-contrib-grpc
golang-github-pires-proxyproto
golang-github-planetscale-pargzip
golang-github-planetscale-tengo
golang-github-sjmudd-stopwatch
golang-github-z-division-zookeeper
golang-gopkg-ldap-2

Regards,
Mikel