rewrite: remove condition file (#3003)
rewrite: remove condition file (#3003)

Nothing it declares is used by CoreDNS and it does not appear to be used
by any third-party packages (according to godoc.org).
yongtang/coredns,johnbelamaric/coredns,chrisohaver/coredns,miekg/coredns,ii/coredns,miekg/coredns,coredns/coredns,ii/coredns,johnbelamaric/coredns