[MD settings] removing .css files from internet settings

chrome/browser/resources/settings/internet_page/network_summary_item.css

Index: chrome/browser/resources/settings/internet_page/network_summary_item.css
diff --git a/chrome/browser/resources/settings/internet_page/network_summary_item.css b/chrome/browser/resources/settings/internet_page/network_summary_item.css
deleted file mode 100644
index 678b3d849c9858e7681b18e0ee32cdd2798fa427..0000000000000000000000000000000000000000
--- a/chrome/browser/resources/settings/internet_page/network_summary_item.css
+++ /dev/null
@@ -1,33 +0,0 @@
-/* Copyright 2015 The Chromium Authors. All rights reserved.
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file. */
-
-#details.selectable:hover {
-  background-color: lightgrey;
-}
-
-#buttons {
-  align-items: center;
-}
-
-.invisible {
-  visibility: hidden;
-}
-
-paper-spinner {
-  -webkit-margin-start: 20px;
-}
-
-#deviceEnabledButton {
-  -webkit-margin-start: 10px;
-}
-
-#listDiv {
-  -webkit-margin-end: 10px;
-  -webkit-margin-start: 40px;
-}
-
-#networkList {
-  margin: 5px 0 10px;
-  max-height: 400px;
-}