Update renovate.json - remove non-working code (#227)

Author: nickboldt

.github/renovate.json

@@ -11,18 +11,5 @@
   ],
   "constraints": {
     "go": "1.20"
-  },
-  "docker": {
-    "branchPrefix": "docker-",
-    "digest": {
-      "enabled": true
-    }
-  },
-  "go": {
-    "branchPrefix": "go-"
-  },
-  "packageRules": [
-    { "matchDatasources": ["docker"] },
-    { "matchDatasources": ["go"] }
-  ]
+  }
 }