Migrate language block 46 - canonical_const ... char_escape.

tests/language_strong/cha_deopt3_lib.dart

Index: tests/language_strong/cha_deopt3_lib.dart
diff --git a/tests/language_strong/cha_deopt3_lib.dart b/tests/language_strong/cha_deopt3_lib.dart
deleted file mode 100644
index 922cf9a17506949356dc89b206ef6401e6e9e5f2..0000000000000000000000000000000000000000
--- a/tests/language_strong/cha_deopt3_lib.dart
+++ /dev/null
@@ -1,17 +0,0 @@
-// Copyright (c) 2014, 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.
-
-library mylib;
-
-class A {}
-
-class B {}
-
-class C {}
-
-class D {}
-
-class E {}
-
-class T {}