Revert "Add committer warner"

This reverts commit 809bbb175f39a4c9767735ba92188f174a339c36.

Reason for revert:
Using innerHTML is not supported, and this blocks import
of chromium-behavior into google.

Change-Id: Id8003f990e6613abc38c082e44d5898cacdf843b
diff --git a/src/main/resources/static/chromium-behavior.js b/src/main/resources/static/chromium-behavior.js
index 2cd1cab..4809ef7 100644
--- a/src/main/resources/static/chromium-behavior.js
+++ b/src/main/resources/static/chromium-behavior.js
@@ -12,16 +12,12 @@
 import {installLgtmWatcher} from './lgtm-catcher.js';
 import {maybeInstallReland} from './reland-button.js';
 import {warnAboutTbr} from './tbr-warner.js';
-import {maybeInstallCommitterWarning} from './committer-warner.js';
 
 Gerrit.install((plugin) => {
   const chopsBanner = new ChopsBanner(window.location.host);
   plugin.hook('banner').onAttached((el) => {
     chopsBanner.register(el);
   });
-  plugin.hook('change-metadata-item').onAttached((el) => {
-    maybeInstallCommitterWarning(el);
-  });
 
   let onConfirmRevertChange, onRevert, onPostRevert;
   if (window.location.host === 'skia-review.googlesource.com') {
diff --git a/src/main/resources/static/committer-warner.js b/src/main/resources/static/committer-warner.js
deleted file mode 100644
index 0e3f89a..0000000
--- a/src/main/resources/static/committer-warner.js
+++ /dev/null
@@ -1,45 +0,0 @@
-// Copyright 2020 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-import {STATUS_SUBMITTED} from './common.js';
-
-const COMMITTER_WARNER_STYLES = {
-  styleContainer:
-      'display: inline-block;' +
-      'width: 100%;' +
-      'padding-top: var(--spacing-l);' +
-      'padding-left: var(--metadata-horizontal-padding);' +
-      'padding-bottom: var(--spacing-l);',
-};
-
-/**
- * Adds a committer warning to the page if appropriate.
- * @param {element} element: the change-metadata-item element.
- */
-export async function maybeInstallCommitterWarning(element) {
-  if (element.change.status === STATUS_SUBMITTED) {
-    return;
-  }
-
-  if (element.revision.commit.author.email ===
-      element.revision.commit.committer.email) {
-    return;
-  }
-
-  const message = "Author and Committer are different";
-  installCommitterWarning(element, message);
-}
-
-/**
- * Adds a committer warning to the page.
- * @param {element} element: the element object
- * @param {string} message: the message for the current change
- */
-function installCommitterWarning(element, message) {
-  element.innerHTML = `
-  <div style="${COMMITTER_WARNER_STYLES.styleContainer}">
-    <span><span style='color:red; font-weight: bold'>⚠</span> ${message}</span>
-  </div>
-  `;
-}