Simplify operator-linebreak configuration

Enabling `before` caused more code changes and it turns out our previous
configuration is already the default.

.eslintrc.js

@@ -38,6 +38,6 @@ module.exports = {
     // though we have a logger, we still remap console to log to disk
     'no-console': 'off',
 
-    'operator-linebreak': ["error", "after", { "overrides": { '?': 'before', ':': 'before' } }]
+    'operator-linebreak': 'error',
   }
 };