Remove backends.

compiler/javatests/com/google/dart/compiler/backend/js/testListExprOpt.dart

Index: compiler/javatests/com/google/dart/compiler/backend/js/testListExprOpt.dart
diff --git a/compiler/javatests/com/google/dart/compiler/backend/js/testListExprOpt.dart b/compiler/javatests/com/google/dart/compiler/backend/js/testListExprOpt.dart
deleted file mode 100644
index cb22404acd12e79db16a03a67f59f4c193cd0d83..0000000000000000000000000000000000000000
--- a/compiler/javatests/com/google/dart/compiler/backend/js/testListExprOpt.dart
+++ /dev/null
@@ -1,51 +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.
-
-class MyClass<T> {
-  MyClass(x) { }
-  T operator [](int index) {
-  }
-  void operator []=(int index, int val) {
-  }
-}
-
-class Main {
-  static void main() {
-    // base case (should be inlined).
-    List<int> _list0_ = new List<int>(10);
-    _list0_[0] = 1;
-    int lhs0 = _list0_[0];
-    
-    // final case - only 'reads' can be inlined.
-    final List<int> _list1_ = new List<int>(10);
-    _list1_[0] = 1;
-    int lhs1 = _list1_[0];
-
-    // operator [] - cannot inline reads or writes.
-    MyClass<String> _list2_ = new MyClass<String>(2);
-    _list2_[0] = "foo";
-    String lhs2 = _list2_[0];
-
-    // untyped.
-    var _list3_ = new List<String>(2);
-    _list3_[0] = "foo";
-    String lhs3 = _list3_[0];
-
-    // untyped.
-    List<String> _list4_ = new List<String>(2);
-    int i_0 = 0;
-    int j_0 = 0;
-    _list4_[i_0 + j_0] = "foo";
-    String lhs4 = _list4_[i_0 - j_0];
-
-    // nested list (should be inlined).
-    List<List<List<int>>> _list5_ = new List<List<List<int>>>(10);
-    _list5_[0] = null;
-    var lhs5 = _list5_[0];
-    _list5_[0][1] = null;
-    lhs5 = _list5_[0][1];
-    _list5_[0][1][2] = 1;
-    lhs5 = _list5_[0][1][2];
-  }
-}