diff --git a/build.json b/build.json
index 53f8aa6a3c..9d66994720 100644
--- a/build.json
+++ b/build.json
@@ -21,6 +21,5 @@
     "src/declaration/properties.js",
     "src/declaration/attributes.js",
     "src/declaration/prototype.js",
-    "src/declaration/polymer-element.js",
-    "src/deprecated.js"
+    "src/declaration/polymer-element.js"
 ]
diff --git a/src/deprecated.js b/src/deprecated.js
deleted file mode 100644
index 29000a946b..0000000000
--- a/src/deprecated.js
+++ /dev/null
@@ -1,7 +0,0 @@
-/*
- * Copyright 2013 The Polymer Authors. All rights reserved.
- * Use of this source code is governed by a BSD-style
- * license that can be found in the LICENSE file.
- */
-
-// NOTE: put deprecated methods here that throw a useful error