Remove backends.

compiler/java/com/google/dart/compiler/backend/js/ast/JsLabel.java

Index: compiler/java/com/google/dart/compiler/backend/js/ast/JsLabel.java
diff --git a/compiler/java/com/google/dart/compiler/backend/js/ast/JsLabel.java b/compiler/java/com/google/dart/compiler/backend/js/ast/JsLabel.java
deleted file mode 100644
index ec044fea41581e9aca0ca20d331d4cdf9e65aaac..0000000000000000000000000000000000000000
--- a/compiler/java/com/google/dart/compiler/backend/js/ast/JsLabel.java
+++ /dev/null
@@ -1,52 +0,0 @@
-// Copyright (c) 2011, 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.
-
-package com.google.dart.compiler.backend.js.ast;
-
-import com.google.dart.compiler.common.Symbol;
-
-/**
- * Represents a JavaScript label statement.
- */
-public class JsLabel extends JsStatement implements HasName {
-
-  private final JsName label;
-
-  private JsStatement stmt;
-
-  public JsLabel(JsName label) {
-    this.label = label;
-  }
-
-  @Override
-  public JsName getName() {
-    return label;
-  }
-
-  @Override
-  public Symbol getSymbol() {
-    return label;
-  }
-
-  public JsStatement getStmt() {
-    return stmt;
-  }
-
-  public void setStmt(JsStatement stmt) {
-    this.stmt = stmt;
-  }
-
-  @Override
-  public void traverse(JsVisitor v, JsContext ctx) {
-    if (v.visit(this, ctx)) {
-      stmt = v.accept(stmt);
-    }
-    v.endVisit(this, ctx);
-  }
-
-  @Override
-  public NodeKind getKind() {
-    return NodeKind.LABEL;
-  }
-}