Revert "Polymer elements added to third_party/polymer."

third_party/polymer/components/core-item/core-item.css

Index: third_party/polymer/components/core-item/core-item.css
diff --git a/third_party/polymer/components/core-item/core-item.css b/third_party/polymer/components/core-item/core-item.css
deleted file mode 100644
index fa1370516073fe95e2442d5486f8accb57fd6180..0000000000000000000000000000000000000000
--- a/third_party/polymer/components/core-item/core-item.css
+++ /dev/null
@@ -1,41 +0,0 @@
-/*
-Copyright (c) 2014 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
-*/
-
-html /deep/ core-item {
-  display: block;
-  position: relative;
-  min-height: 40px;
-  white-space: nowrap;
-}
-
-html /deep/ core-item.font-scalable {
-  min-height: 2.5em;
-}
-
-html /deep/ core-item.core-selected {
-  font-weight: bold;
-}
-
-html /deep/ core-item::shadow core-icon {
-  margin: 0 16px 0 4px;
-}
-
-html /deep/ core-item.font-scalable::shadow core-icon {
-  margin: 0 1em 0 0.25em;
-  height: 1.5em;
-  width: 1.5em;
-}
-
-html /deep/ core-item::shadow ::content > a {
-  position: absolute;
-  top: 0;
-  right: 0;
-  bottom: 0;
-  left: 0;
-}