tenzen-y steps down from WG AutoML ownership role

REF: kubeflow/katib#2561


Signed-off-by: Yuki Iwai <[email protected]>

Author: tenzen-y

github-orgs/kubeflow/org.yaml

@@ -876,7 +876,6 @@ orgs:
             - andreyvelich
             - gaocegege
             - johnugeorge
-            - tenzen-y
             privacy: closed
             repos:
               katib: write