Fixed sdk/bin/dart2analyzer to use package-root

sdk/bin/dart2analyzer_developer

Index: sdk/bin/dart2analyzer_developer
diff --git a/sdk/bin/dart2analyzer_developer b/sdk/bin/dart2analyzer_developer
deleted file mode 100755
index 558338299731e5604e28be2da8ae8fee9173aaf2..0000000000000000000000000000000000000000
--- a/sdk/bin/dart2analyzer_developer
+++ /dev/null
@@ -1,6 +0,0 @@
-#!/bin/bash
-# Copyright (c) 2013, 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.
-
-. ${BASH_SOURCE%_developer}