rphillips: Automated cherry pick of #104033: Revert "Add a namespace label to admission metrics and expand

JobBuild
104037
07-30 15:10
9ffddde7
07-30 15:08
pull-kubernetes-conformance-kind-ga-only-parallel 1421125513149157376
pull-kubernetes-dependencies 1421125513010745344
pull-kubernetes-e2e-gce-100-performance 1421125512989773824
pull-kubernetes-e2e-gce-ubuntu-containerd 1421125512847167488
pull-kubernetes-e2e-kind 1421125513069465600
pull-kubernetes-e2e-kind-ipv6 1421125513115602944
pull-kubernetes-integration 1421125513035911168
pull-kubernetes-node-e2e-containerd 1421125512931053568
pull-kubernetes-typecheck 1421125513677639680
pull-kubernetes-unit 1421125513174323200
pull-kubernetes-verify 1421125514512306176
pull-kubernetes-verify-govet-levee 1421125512884916224