Owners: Remove members from aliases covered by other aliases.

ingress-nginx-helm-maintainers:
- cpanato: Covered by ingress-nginx-maintainers
- strongjz: Covered by ingress-nginx-maintainers

ingress-nginx-helm-reviewers:
- cpanato: Covered by ingress-nginx-reviewers
- strongjz: Covered by ingress-nginx-reviewers

ingress-nginx-docs-maintainers:
- tao12345666333: Covered by ingress-nginx-maintainers

OWNERS_ALIASES

@@ -25,20 +25,15 @@ aliases:
   - tao12345666333
 
   ingress-nginx-helm-maintainers:
-  - cpanato
   - Gacko
-  - strongjz
   - ubergesundheit
 
   ingress-nginx-helm-reviewers:
-  - cpanato
   - Gacko
-  - strongjz
   - ubergesundheit
 
   ingress-nginx-docs-maintainers:
   - longwuyuan
-  - tao12345666333
 
   ingress-nginx-kube-webhook-certgen-reviewers:
   - invidian