Remove google-admin from members (#898)

Signed-off-by: Kevin Yang <kevya@google.com>

Author: kevya-google

github-orgs/kubeflow/org.yaml

@@ -194,7 +194,6 @@ orgs:
         - Garrybest
         - gkcalat
         - gmfrasca
-        - google-admin
         - goswamig
         - gregsheremeta
         - greynutw