[MD settings] removing .css files from internet settings

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

Index: chrome/browser/resources/settings/internet_page/internet_known_networks_page.css
diff --git a/chrome/browser/resources/settings/internet_page/internet_known_networks_page.css b/chrome/browser/resources/settings/internet_page/internet_known_networks_page.css
deleted file mode 100644
index fa7b85d985cbef711c91cbe77db116e610685a51..0000000000000000000000000000000000000000
--- a/chrome/browser/resources/settings/internet_page/internet_known_networks_page.css
+++ /dev/null
@@ -1,22 +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. */
-
-#outerDiv {
-  margin: 0 40px;
-}
-
-#headerDiv {
-  background-color: grey;
-  padding: 4px;
-}
-
-#headerDiv span {
-  color: white;
-  padding: 0 8px;
-}
-
-#headerDiv span.button {
-  text-align: center;
-  width: 60px;
-}