Remove fao89 from OWNERS

Signed-off-by: Fabricio Aguiar <fabricio.aguiar@gmail.com>

Author: fao89

OWNERS_ALIASES

@@ -13,7 +13,6 @@ aliases:
   - olliewalsh
   - stuggi
   dataplane-approvers:
-  - fao89
   - fultonj
   - rebtoor
   - slagle