Remove @gnovv

Akira Wong (@gnovv) doesn't work on CF anymore, so I'm revoking all his
roles. I couldn't get in touch with him to discuss this, but he has two
weeks to refute this decision, as per Technical Community Governance.

Author: gcapizzi

org/contributors.yml

@@ -241,7 +241,6 @@ contributors:
 - gggevorgyan
 - git-narya
 - gmrodgers
-- gnovv
 - gossion
 - GowriRegistry
 - graeme-davison

toc/working-groups/cf-on-k8s.md

@@ -57,8 +57,6 @@ areas:
     github: danail-branekov
   - name: Dave Walter
     github: davewalter
-  - name: Akira Wong
-    github: gnovv
   - name: Julian Hjortshoj
     github: julian-hj
   - name: Kieron Browne