Revert "Add no-use-before-define linter rule"

This reverts commit fdcc5d68a2.

Unfortunately, this requires us to move exports to the bottom.
This in turn causes circular dep issues and also access of
exports.GLOBAL_VAR in the global context

src/externalldap.js

@@ -1,5 +1,21 @@
 'use strict';
 
+exports = module.exports = {
+    getConfig,
+    setConfig,
+
+    verifyPassword,
+    maybeCreateUser,
+
+    supports2FA,
+
+    startSyncer,
+
+    removePrivateFields,
+
+    sync
+};
+
 const assert = require('node:assert'),
     AuditSource = require('./auditsource.js'),
     BoxError = require('./boxerror.js'),
@@ -523,18 +539,3 @@ async function sync(progressCallback) {
     debug('sync: done');
 }
 
-exports = module.exports = {
-    getConfig,
-    setConfig,
-
-    verifyPassword,
-    maybeCreateUser,
-
-    supports2FA,
-
-    startSyncer,
-
-    removePrivateFields,
-
-    sync
-};