config(renovate): remove reviewer config, codeowners overrides this

Signed-off-by: Adam Setch <[email protected]>

Author: setchy

renovate.json

@@ -10,7 +10,6 @@
     "schedule:monthly"
   ],
   "assignees": ["setchy"],
-  "reviewers": ["setchy"],
   "labels": ["dependency"],
   "rangeStrategy": "pin",
   "packageRules": [