Remove old cc-frame-viewer now that it is upstreamed into trace_viewer

tools/cc-frame-viewer/src/ui/list_view.css

Index: tools/cc-frame-viewer/src/ui/list_view.css
diff --git a/tools/cc-frame-viewer/src/ui/list_view.css b/tools/cc-frame-viewer/src/ui/list_view.css
deleted file mode 100644
index 0c1824c12b0b1d48ec99b3888e09530dcd5f3aaa..0000000000000000000000000000000000000000
--- a/tools/cc-frame-viewer/src/ui/list_view.css
+++ /dev/null
@@ -1,28 +0,0 @@
-/* Copyright (c) 2012 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. */
-x-list-view {
-    display: block;
-    -webkit-user-select: none;
-}
-x-list-view:focus {
-    outline: none;
-}
-
-x-list-view * {
-    -webkit-user-select: none;
-}
-
-x-list-view > .list-item {
-    padding: 2px 4px 2px 4px;
-}
-
-x-list-view:focus > .list-item[selected] {
-    background-color: rgb(171, 217, 202);
-    outline-offset: 0;
-    outline: 1px dotted rgba(0,0,0,0.1);
-}
-
-x-list-view > .list-item[selected] {
-    background-color: rgb(103, 199, 165);
-}