Stop using the Hashable interface.

All objects have a hashCode method, so there is no need for a Hashable
interface.
The interface itself is retained for at least two weeks, to give time for
code to remove uses of it.

Review URL: https://codereview.chromium.org//10993059

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart/pkg/logging@12955 260f80e4-7a28-3924-810f-c04153c831b5
1 file changed
tree: 7e2f8a979f0dc1c466d4d8de07c19f219a155fc4
  1. lib/
  2. test/
  3. pubspec.yaml