Removed DARTIUM codegen for IDLS (sdk/lib/dartium)

tools/dom/templates/html/dartium/dart_implementation.darttemplate

Index: tools/dom/templates/html/dartium/dart_implementation.darttemplate
diff --git a/tools/dom/templates/html/dartium/dart_implementation.darttemplate b/tools/dom/templates/html/dartium/dart_implementation.darttemplate
deleted file mode 100644
index def025093a32bb04819ab3f04a6801e6ffc65587..0000000000000000000000000000000000000000
--- a/tools/dom/templates/html/dartium/dart_implementation.darttemplate
+++ /dev/null
@@ -1,12 +0,0 @@
-// Copyright (c) 2012, 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.
-
-// WARNING: Do not edit - generated code.
-
-part of $LIBRARYNAME;
-
-@DocsEditable()
-$(ANNOTATIONS)$(CLASS_MODIFIERS)class $CLASSNAME$EXTENDS$MIXINS$IMPLEMENTS {
-$!MEMBERS
-}