diff --git a/packages/core/test/test_util/loadExpressV4.js b/packages/core/test/test_util/loadExpressV4.js
deleted file mode 100644
index 0e4a254f5c..0000000000
--- a/packages/core/test/test_util/loadExpressV4.js
+++ /dev/null
@@ -1,11 +0,0 @@
-/*
- * (c) Copyright IBM Corp. 2025
- */
-
-'use strict';
-
-const mock = require('./mockRequire');
-const EXPRESS_VERSION = 'v4';
-const EXPRESS_REQUIRE = `express-${EXPRESS_VERSION}`;
-
-mock('express', EXPRESS_REQUIRE);