johngmyers: Remove vestigial Cilium ContainerRuntimeLabels code

JobBuild
12615
10-26 23:27
pull-kops-bazel-build 1453141009025208320
pull-kops-bazel-test 1453141009067151360
pull-kops-e2e-cni-cilium 1453141008995848192
pull-kops-e2e-kubernetes-aws 1453141008949710848
pull-kops-verify-bazel 1453141009100705792
pull-kops-verify-boilerplate 1453141009205563392
pull-kops-verify-cloudformation 1453141011445321728
pull-kops-verify-generated 1453141009130065920
pull-kops-verify-gofmt 1453141009239117824
pull-kops-verify-gomod 1453141009172008960
pull-kops-verify-govet 1453141009268477952
pull-kops-verify-staticcheck 1453141009767600128
pull-kops-verify-terraform 1453141010614849536