Remove dart backend

test/dart_codegen/expect/core/core

Index: test/dart_codegen/expect/core/core
diff --git a/test/dart_codegen/expect/core/core b/test/dart_codegen/expect/core/core
deleted file mode 100644
index a5ea20ff4132277f9f1128be4349359eead123ea..0000000000000000000000000000000000000000
--- a/test/dart_codegen/expect/core/core
+++ /dev/null
@@ -1,40 +0,0 @@
-library dart.core;
-import 'package:dev_compiler/runtime/dart_logging_runtime.dart' as DEVC$RT;
-import "dart:collection";
- import "dart:_internal" hide Symbol;
- import "dart:_internal" as internal show Symbol;
- import "dart:convert" show UTF8, LATIN1, Encoding;
- import "dart:math" show Random;
-part "annotations.dart";
- part "bool.dart";
- part "comparable.dart";
- part "date_time.dart";
- part "double.dart";
- part "duration.dart";
- part "errors.dart";
- part "exceptions.dart";
- part "expando.dart";
- part "function.dart";
- part "identical.dart";
- part "int.dart";
- part "invocation.dart";
- part "iterable.dart";
- part "iterator.dart";
- part "list.dart";
- part "map.dart";
- part "null.dart";
- part "num.dart";
- part "object.dart";
- part "pattern.dart";
- part "print.dart";
- part "regexp.dart";
- part "set.dart";
- part "sink.dart";
- part "stacktrace.dart";
- part "stopwatch.dart";
- part "string.dart";
- part "string_buffer.dart";
- part "string_sink.dart";
- part "symbol.dart";
- part "type.dart";
- part "uri.dart";