[MD settings] removing .css files from internet settings

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

Index: chrome/browser/resources/settings/internet_page/network_proxy.css
diff --git a/chrome/browser/resources/settings/internet_page/network_proxy.css b/chrome/browser/resources/settings/internet_page/network_proxy.css
deleted file mode 100644
index 82bf90990edcdfe283fdd892e67be8067dc96816..0000000000000000000000000000000000000000
--- a/chrome/browser/resources/settings/internet_page/network_proxy.css
+++ /dev/null
@@ -1,32 +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. */
-
-:host {
-  display: inline-block;
-}
-
-#selectTypeDiv {
-  margin: 10px 0;
-}
-
-select {
-  padding: 5px;
-}
-
-span {
-  margin: 5px;
-}
-
-cr-policy-network-indicator {
-  -webkit-margin-end: 10px;
-  mwrgin-bottom: 5px;
-}
-
-paper-checkbox {
-  margin-bottom: 10px;
-}
-
-paper-input {
-  margin: -9px 5px 0;
-}