Remove unneeded files from third_party/polymer.

third_party/polymer/v1_0/components-chromium/iron-collapse/README.md

Index: third_party/polymer/v1_0/components-chromium/iron-collapse/README.md
diff --git a/third_party/polymer/v1_0/components-chromium/iron-collapse/README.md b/third_party/polymer/v1_0/components-chromium/iron-collapse/README.md
deleted file mode 100644
index bc5652738de246553d7600800384495462711221..0000000000000000000000000000000000000000
--- a/third_party/polymer/v1_0/components-chromium/iron-collapse/README.md
+++ /dev/null
@@ -1,58 +0,0 @@
-
-<!---
-
-This README is automatically generated from the comments in these files:
-iron-collapse.html
-
-Edit those files, and our readme bot will duplicate them over here!
-Edit this file, and the bot will squash your changes :)
-
-The bot does some handling of markdown. Please file a bug if it does the wrong
-thing! https://github.com/PolymerLabs/tedium/issues
-
--->
-
-[![Build Status](https://travis-ci.org/PolymerElements/iron-collapse.svg?branch=master)](https://travis-ci.org/PolymerElements/iron-collapse)
-
-_[Demo and API Docs](https://elements.polymer-project.org/elements/iron-collapse)_
-
-
-##&lt;iron-collapse&gt;
-
-`iron-collapse` creates a collapsible block of content.  By default, the content
-will be collapsed.  Use `opened` or `toggle()` to show/hide the content.
-
-```html
-<button on-click="toggle">toggle collapse</button>
-
-<iron-collapse id="collapse">
-  <div>Content goes here...</div>
-</iron-collapse>
-
-...
-
-toggle: function() {
-  this.$.collapse.toggle();
-}
-```
-
-`iron-collapse` adjusts the height/width of the collapsible element to show/hide
-the content.  So avoid putting padding/margin/border on the collapsible directly,
-and instead put a div inside and style that.
-
-```html
-<style>
-  .collapse-content {
-    padding: 15px;
-    border: 1px solid #dedede;
-  }
-</style>
-
-<iron-collapse>
-  <div class="collapse-content">
-    <div>Content goes here...</div>
-  </div>
-</iron-collapse>
-```
-
-