Revert "Build Observatory with runtime"

runtime/observatory/test/functions_test.dart

-// 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 functions_test;
-
-import 'package:observatory/service_io.dart';
-import 'package:unittest/unittest.dart';
-import 'test_helper.dart';
-
-class Foo {
-  int a;
-}
-
-void script() {
-  new Foo().a = 42;
-}
-
-var tests = [
-
-(Isolate isolate) =>
-  isolate.rootLib.load().then((Library lib) {
-    expect(lib.classes.length, equals(1));
-    return lib.classes.first.load().then((Class fooClass) {
-      expect(fooClass.name, equals('Foo'));
-      return fooClass.get('functions/get%3Aa').then((ServiceFunction func) {
-        expect(func.name, equals('a'));
-        expect(func.kind, equals(FunctionKind.kImplicitGetterFunction));
-      });
-    });
-}),
-
-];
-
-main(args) => runIsolateTests(args, tests, testeeBefore: script);