groups: remove serviceaccounts from groups

the serviceaccounts are now bound directly to the appropriate roles

it seems like including a serviceaccount in a group does not always
propogate permissions correctly, so let's stop using it as a pattern

Author: spiffxp

groups/groups.yaml

@@ -250,7 +250,6 @@ groups:
       - james@munnelly.eu
       - spiffxp@google.com
       - thockin@google.com
-      - k8s-infra-dns-updater@kubernetes-public.iam.gserviceaccount.com
 
   #
   # Push groups: k8s-infra-push-*

groups/wg-k8s-infra/groups.yaml

@@ -126,7 +126,6 @@ groups:
       - cblecker@gmail.com
       - davanum@gmail.com
       - ihor@cncf.io
-      - k8s-infra-gcp-auditor@kubernetes-public.iam.gserviceaccount.com
       - k8s-infra-ii-coop@kubernetes.io
       - spiffxp@google.com
       - spiffxp@gmail.com