Remove third_party/polymer from .gitignore

third_party/polymer/v1_0/components/paper-styles/demo-pages.html

Index: third_party/polymer/v1_0/components/paper-styles/demo-pages.html
diff --git a/third_party/polymer/v1_0/components/paper-styles/demo-pages.html b/third_party/polymer/v1_0/components/paper-styles/demo-pages.html
deleted file mode 100644
index 44f22887276ae7ebcd30771cb5da677c4b4bea4c..0000000000000000000000000000000000000000
--- a/third_party/polymer/v1_0/components/paper-styles/demo-pages.html
+++ /dev/null
@@ -1,72 +0,0 @@
-<!--
-@license
-Copyright (c) 2015 The Polymer Project Authors. All rights reserved.
-This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
-The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
-The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
-Code distributed by Google as part of the polymer project is also
-subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
--->
-
-<link rel="import" href="../polymer/polymer.html">
-
-<link rel="import" href="../iron-flex-layout/iron-flex-layout.html">
-
-<link rel="import" href="color.html">
-<link rel="import" href="typography.html">
-<link rel="import" href="shadow.html">
-
-<style is="custom-style">
-
-  body {
-    font-family: 'Roboto', 'Noto', sans-serif;
-    font-size: 14px;
-    margin: 0;
-    padding: 24px;
-    background-color: var(--paper-grey-50);
-  }
-
-  .horizontal-section-container {
-    @apply(--layout-horizontal);
-    @apply(--layout-center-justified);
-    @apply(--layout-wrap);
-  }
-
-  .vertical-section-container {
-    @apply(--layout-vertical);
-    @apply(--center-justified);
-  }
-
-  .horizontal-section {
-    background-color: white;
-    padding: 24px;
-    margin-right: 24px;
-    min-width: 200px;
-
-    @apply(--shadow-elevation-2dp);
-  }
-
-  .vertical-section {
-    background-color: white;
-    padding: 24px;
-    margin: 0 24px 24px 24px;
-
-    @apply(--shadow-elevation-2dp);
-  }
-
-  .centered {
-    max-width: 400px;
-    margin-left: auto;
-    margin-right: auto;
-  }
-
-  code {
-    color: var(--google-grey-700);
-  }
-
-  /* TODO: remove this hack and use horizontal-section-container instead */
-  body > div.layout.horizontal.center-justified {
-    @apply(--layout-wrap);
-  }
-
-</style>