Remove unneeded files from third_party/polymer.

third_party/polymer/v1_0/components-chromium/paper-spinner/README.md

Index: third_party/polymer/v1_0/components-chromium/paper-spinner/README.md
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-
-<!---
-
-This README is automatically generated from the comments in these files:
-paper-spinner-behavior.html  paper-spinner-lite.html  paper-spinner.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/paper-spinner.svg?branch=master)](https://travis-ci.org/PolymerElements/paper-spinner)
-
-_[Demo and API docs](https://elements.polymer-project.org/elements/paper-spinner)_
-
-
-##&lt;paper-spinner&gt;
-
-Material design: [Progress & activity](https://www.google.com/design/spec/components/progress-activity.html)
-
-Element providing a multiple color material design circular spinner.
-
-```html
-<paper-spinner active></paper-spinner>
-```
-
-The default spinner cycles between four layers of colors; by default they are
-blue, red, yellow and green. It can be customized to cycle between four different
-colors. Use <paper-spinner-lite> for single color spinners.
-
-### Accessibility
-
-Alt attribute should be set to provide adequate context for accessibility. If not provided,
-it defaults to 'loading'.
-Empty alt can be provided to mark the element as decorative if alternative content is provided
-in another form (e.g. a text block following the spinner).
-
-```html
-<paper-spinner alt="Loading contacts list" active></paper-spinner>
-```
-
-### Styling
-
-The following custom properties and mixins are available for styling:
-
-| Custom property | Description | Default |
-| --- | --- | --- |
-| `--paper-spinner-layer-1-color` | Color of the first spinner rotation | `--google-blue-500` |
-| `--paper-spinner-layer-2-color` | Color of the second spinner rotation | `--google-red-500` |
-| `--paper-spinner-layer-3-color` | Color of the third spinner rotation | `--google-yellow-500` |
-| `--paper-spinner-layer-4-color` | Color of the fourth spinner rotation | `--google-green-500` |
-| `--paper-spinner-stroke-width` | The width of the spinner stroke | 3px |
-
-
-
-##&lt;paper-spinner-lite&gt;
-
-Material design: [Progress & activity](https://www.google.com/design/spec/components/progress-activity.html)
-
-Element providing a single color material design circular spinner.
-
-```html
-<paper-spinner-lite active></paper-spinner-lite>
-```
-
-The default spinner is blue. It can be customized to be a different color.
-
-### Accessibility
-
-Alt attribute should be set to provide adequate context for accessibility. If not provided,
-it defaults to 'loading'.
-Empty alt can be provided to mark the element as decorative if alternative content is provided
-in another form (e.g. a text block following the spinner).
-
-```html
-<paper-spinner-lite alt="Loading contacts list" active></paper-spinner-lite>
-```
-
-### Styling
-
-The following custom properties and mixins are available for styling:
-
-| Custom property | Description | Default |
-| --- | --- | --- |
-| `--paper-spinner-color` | Color of the spinner | `--google-blue-500` |
-| `--paper-spinner-stroke-width` | The width of the spinner stroke | 3px |
-
-
-
-<!-- No docs for Polymer.PaperSpinnerBehavior found. -->