diff --git a/integration-tests/helpers/index.js b/integration-tests/helpers/index.js
index b8f55704a3b..f451a4364ce 100644
--- a/integration-tests/helpers/index.js
+++ b/integration-tests/helpers/index.js
@@ -338,11 +338,6 @@ function sandboxCwd () {
   return sandbox.folder
 }
 
-function base64 (strOrObj) {
-  const str = typeof strOrObj === 'string' ? strOrObj : JSON.stringify(strOrObj)
-  return Buffer.from(str).toString('base64')
-}
-
 module.exports = {
   FakeAgent,
   spawnProc,