Remove code that requires whole-program compile

lib/runtime/messages.css

Index: lib/runtime/messages.css
diff --git a/lib/runtime/messages.css b/lib/runtime/messages.css
deleted file mode 100644
index d2f8d08796dd65a41e29d4eb7ef51d9d4bc751a5..0000000000000000000000000000000000000000
--- a/lib/runtime/messages.css
+++ /dev/null
@@ -1,78 +0,0 @@
-/** Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
-    for details. All rights reserved. Use of this source code is governed by a
-    BSD-style license that can be found in the LICENSE file. **/
-.dev-compiler-messages {
-  position: fixed;
-  bottom: 0;
-  right: 0;
-  max-width: 80vw;
-  z-index: 10000;
-  font-family: sans-serif !important;
-}
-.dev-compiler-messages .message {
-  padding: 0.6em;
-  background: black;
-  color: white;
-  border: solid 1px #666;
-  border-bottom: 0px;
-  text-overflow: ellipsis;
-  overflow-x: hidden;
-}
-.dev-compiler-messages .fine {
-  color: green;
-}
-.dev-compiler-messages .info {
-  color: yellow;
-}
-.dev-compiler-messages .warning {
-  color: orange;
-}
-.dev-compiler-messages .error {
-  color: red;
-}
-.dev-compiler-messages div.text {
-  white-space: nowrap;
-  cursor: pointer;
-}
-.dev-compiler-messages div.text.expanded {
-  white-space: normal;
-}
-.dev-compiler-messages div.text a {
-  color: #CCF;
-  text-decoration: bold;
-}
-.dev-compiler-messages div.menu {
-  text-align: right;
-}
-.dev-compiler-messages .menu div {
-  display: inline-block;
-  background: #666;
-  font-weight: bold;
-  cursor: pointer;
-  border: solid 1px black;
-  padding: 0.6em 1em;
-}
-.dev-compiler-messages .menu div.active {
-  background: black;
-}
-.dev-compiler-messages .menu div .num {
-  color: white;
-}
-.dev-compiler-messages .content {
-  max-height: 75vh;
-  font-size: 1em;
-  overflow-y: auto;
-}
-.dev-compiler-messages .content > div {
-  display: none;
-}
-.dev-compiler-messages .content > div.active {
-  display: block;
-}
-
-.dev-compiler-messages .content span.text {
-  padding: 0.4em 0.2em 0.2em 2em;
-  white-space: pre;
-  display: block;
-  font-family: monospace !important;
-}