Revert "add versions and constraints for packages and samples"

This is currently blocking us from testing samples.

BUG=
R=kasperl@google.com

Review URL: https://codereview.chromium.org//59513007

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart/pkg/csslib@29960 260f80e4-7a28-3924-810f-c04153c831b5
diff --git a/pubspec.yaml b/pubspec.yaml
index 6422dd6..b821941 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,15 +1,12 @@
 name: csslib
-version: 0.9.0
 author: "Web UI Team <web-ui-dev@dartlang.org>"
 description: A library for parsing CSS.
 homepage: https://www.dartlang.org
 dependencies:
-  args: ">=0.9.0 <0.10.0"
-  logging: ">=0.9.0 <0.10.0"
-  path: ">=0.9.0 <0.10.0"
-  source_maps: ">=0.9.0 <0.10.0"
+  args: any
+  logging: any
+  path: any
+  source_maps: any
 dev_dependencies:
-  browser: ">=0.9.0 <0.10.0"
-  unittest: ">=0.9.0 <0.10.0"
-environment:
-  sdk: ">=1.0.0 <2.0.0"
+  browser: any
+  unittest: any