Remove unneeded files from third_party/polymer.

third_party/polymer/v1_0/components-chromium/iron-test-helpers/.bower.json

Index: third_party/polymer/v1_0/components-chromium/iron-test-helpers/.bower.json
diff --git a/third_party/polymer/v1_0/components-chromium/iron-test-helpers/.bower.json b/third_party/polymer/v1_0/components-chromium/iron-test-helpers/.bower.json
deleted file mode 100644
index c06eb0eaf559874786b9425c266b3a76b0cb7352..0000000000000000000000000000000000000000
--- a/third_party/polymer/v1_0/components-chromium/iron-test-helpers/.bower.json
+++ /dev/null
@@ -1,39 +0,0 @@
-{
-  "name": "iron-test-helpers",
-  "version": "1.1.5",
-  "authors": [
-    "The Polymer Authors"
-  ],
-  "description": "Utility classes to help make testing easier",
-  "keywords": [
-    "web-components",
-    "web-component",
-    "polymer",
-    "test"
-  ],
-  "private": true,
-  "repository": {
-    "type": "git",
-    "url": "git://github.com/PolymerElements/iron-test-helpers"
-  },
-  "license": "http://polymer.github.io/LICENSE.txt",
-  "homepage": "https://github.com/PolymerElements/iron-test-helpers",
-  "ignore": [],
-  "dependencies": {
-    "polymer": "Polymer/polymer#^1.0.0"
-  },
-  "devDependencies": {
-    "webcomponentsjs": "webcomponents/webcomponentsjs#^0.7.0",
-    "web-component-tester": "^4.0.0"
-  },
-  "main": "iron-test-helpers.html",
-  "_release": "1.1.5",
-  "_resolution": {
-    "type": "version",
-    "tag": "v1.1.5",
-    "commit": "76d7e5b4d52587c853e8b2cbdf8d970bcf209ff3"
-  },
-  "_source": "git://github.com/PolymerElements/iron-test-helpers.git",
-  "_target": "^1.0.0",
-  "_originalSource": "PolymerElements/iron-test-helpers"
-}