diff --git a/third_party/mustache/compile.sh b/third_party/mustache/compile.sh
deleted file mode 100755
index 540440388041..000000000000
--- a/third_party/mustache/compile.sh
+++ /dev/null
@@ -1,10 +0,0 @@
-#!/usr/bin/env bash
-# Run this file with bash to convert the mustache library from UMD to ESM
-# for inclusion into AMP.
-
-# Apply all the patches in third_party/mustache/patches/
-for patchfile in patches/*.patch
-do
-  echo "Applying patch $patchfile"
-  patch < $patchfile
-done
diff --git a/third_party/mustache/patches/0000-remove-umd-wrapper.patch b/third_party/mustache/patches/0000-remove-umd-wrapper.patch
deleted file mode 100644
index b24aba4fbef6..000000000000
--- a/third_party/mustache/patches/0000-remove-umd-wrapper.patch
+++ /dev/null
@@ -1,32 +0,0 @@
-diff --git a/third_party/mustache/mustache.js b/third_party/mustache/mustache.js
-index fcc0fe678..869e4f36f 100644
---- a/third_party/mustache/mustache.js
-+++ b/third_party/mustache/mustache.js
-@@ -5,16 +5,7 @@
-
- /*global define: false Mustache: true*/
-
--(function defineMustache (global, factory) {
--  if (typeof exports === 'object' && exports && typeof exports.nodeName !== 'string') {
--    factory(exports); // CommonJS
--  } else if (typeof define === 'function' && define.amd) {
--    define(['exports'], factory); // AMD
--  } else {
--    global.Mustache = {};
--    factory(Mustache); // script, wsh, asp
--  }
--}(this, function mustacheFactory (mustache) {
-+function mustacheFactory (mustache) {
-
-   var objectToString = Object.prototype.toString;
-   var isArray = Array.isArray || function isArrayPolyfill (object) {
-@@ -649,4 +640,8 @@
-   mustache.Context = Context;
-   mustache.Writer = Writer;
-
--}));
-+};
-+
-+const Mustache = {};
-+mustacheFactory(Mustache);
-+export default Mustache;