Remove backends.

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

Index: compiler/java/com/google/dart/compiler/backend/js/ast/JsCatch.java
diff --git a/compiler/java/com/google/dart/compiler/backend/js/ast/JsCatch.java b/compiler/java/com/google/dart/compiler/backend/js/ast/JsCatch.java
deleted file mode 100644
index f992545b944e00e925ddd0bf884e00d1225e1d9c..0000000000000000000000000000000000000000
--- a/compiler/java/com/google/dart/compiler/backend/js/ast/JsCatch.java
+++ /dev/null
@@ -1,66 +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;
-
-/**
- * Represents a JavaScript catch clause.
- */
-public class JsCatch extends JsNode implements HasCondition {
-
-  protected final JsCatchScope scope;
-  private JsBlock body;
-  private JsExpression condition;
-  private JsParameter param;
-
-  public JsCatch(JsScope parent, String ident) {
-    super();
-    assert (parent != null);
-    scope = new JsCatchScope(parent, ident);
-    param = new JsParameter(scope.findExistingName(ident));
-  }
-
-  public JsBlock getBody() {
-    return body;
-  }
-
-  @Override
-  public JsExpression getCondition() {
-    return condition;
-  }
-
-  public JsParameter getParameter() {
-    return param;
-  }
-
-  public JsScope getScope() {
-    return scope;
-  }
-
-  public void setBody(JsBlock body) {
-    this.body = body;
-  }
-
-  @Override
-  public void setCondition(JsExpression condition) {
-    this.condition = condition;
-  }
-
-  @Override
-  public void traverse(JsVisitor v, JsContext ctx) {
-    if (v.visit(this, ctx)) {
-      param = v.accept(param);
-      if (condition != null) {
-        condition = v.accept(condition);
-      }
-      body = v.accept(body);
-    }
-    v.endVisit(this, ctx);
-  }
-
-  @Override
-  public NodeKind getKind() {
-    return NodeKind.CATCH;
-  }
-}