diff --git a/modules/@angular/upgrade/src/util.ts b/modules/@angular/upgrade/src/util.ts
index 12bf5aa057..cafca15a8d 100644
--- a/modules/@angular/upgrade/src/util.ts
+++ b/modules/@angular/upgrade/src/util.ts
@@ -7,11 +7,6 @@
  */
 
 
-export function stringify(obj: any): string {
-  if (typeof obj == 'function') return obj.name || obj.toString();
-  return '' + obj;
-}
-
 
 export function onError(e: any) {
   // TODO: (misko): We seem to not have a stack trace here!