Remove unneeded files from third_party/polymer.

third_party/polymer/v1_0/components-chromium/paper-input/bower.json

-{
-  "name": "paper-input",
-  "version": "1.1.8",
-  "description": "Material design text fields",
-  "authors": [
-    "The Polymer Authors"
-  ],
-  "keywords": [
-    "web-components",
-    "polymer",
-    "input"
-  ],
-  "main": [
-    "paper-input.html",
-    "paper-textarea.html",
-    "paper-input-behavior.html",
-    "paper-input-container.html",
-    "paper-input-error.html",
-    "paper-input-addon-behavior.html",
-    "paper-input-char-counter.html"
-  ],
-  "private": true,
-  "repository": {
-    "type": "git",
-    "url": "git://github.com/PolymerElements/paper-input.git"
-  },
-  "license": "http://polymer.github.io/LICENSE.txt",
-  "homepage": "https://github.com/PolymerElements/paper-input",
-  "ignore": [],
-  "dependencies": {
-    "polymer": "Polymer/polymer#^1.2.0",
-    "iron-autogrow-textarea": "PolymerElements/iron-autogrow-textarea#^1.0.0",
-    "iron-behaviors": "PolymerElements/iron-behaviors#^1.0.0",
-    "iron-form-element-behavior": "PolymerElements/iron-form-element-behavior#^1.0.0",
-    "iron-input": "PolymerElements/iron-input#^1.0.0",
-    "paper-styles": "PolymerElements/paper-styles#^1.1.0",
-    "iron-a11y-keys-behavior": "PolymerElements/iron-a11y-keys-behavior#^1.0.0"
-  },
-  "devDependencies": {
-    "iron-component-page": "PolymerElements/iron-component-page#^1.0.0",
-    "iron-demo-helpers": "PolymerElements/iron-demo-helpers#^1.0.0",
-    "iron-icon": "PolymerElements/iron-icon#^1.0.0",
-    "iron-test-helpers": "PolymerElements/iron-test-helpers#^1.0.0",
-    "iron-validator-behavior": "PolymerElements/iron-validator-behavior#^1.0.0",
-    "paper-icon-button": "PolymerElements/paper-icon-button#^1.0.0",
-    "test-fixture": "PolymerElements/test-fixture#^1.0.0",
-    "web-component-tester": "^4.0.0",
-    "webcomponentsjs": "webcomponents/webcomponentsjs#^0.7.0"
-  }
-}