Remove third_party/polymer from .gitignore

third_party/polymer/v1_0/components/paper-styles/default-theme.html

Index: third_party/polymer/v1_0/components/paper-styles/default-theme.html
diff --git a/third_party/polymer/v1_0/components/paper-styles/default-theme.html b/third_party/polymer/v1_0/components/paper-styles/default-theme.html
deleted file mode 100644
index add581cdae1be72a9aa7ea9b7df9d1809178ef77..0000000000000000000000000000000000000000
--- a/third_party/polymer/v1_0/components/paper-styles/default-theme.html
+++ /dev/null
@@ -1,39 +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">
-
-<style is="custom-style">
-
-  :root {
-
-    --dark-primary-color: #303f9f;
-
-    --default-primary-color: #3f51b5;
-
-    --light-primary-color: #c5cae9;
-
-    --text-primary-color: #ffffff;
-
-    --accent-color: #ff4081;
-
-    --primary-background-color: #ffffff;
-
-    --primary-text-color: #212121;
-
-    --secondary-text-color: #757575;
-
-    --disabled-text-color: #bdbdbd;
-
-    --divider-color: #e0e0e0;
-
-  }
-
-</style>