Yank chef 11.4.4 in favour of chef 11.4.0

ie. because of this bug:

  http://tickets.opscode.com/browse/CHEF-4123

ie. until opscode bother to release this change:

  https://github.com/opscode/chef/commit/451b7fb16fbc36b8a6391fec54474fc7d26f160c

Also, strange opscode haven't yanked the gem themselves:

  http://rubygems.org/gems/chef/versions/11.4.4
Merge pull request #15 from locomote/yank_chef_11_4_4

Yank chef 11.4.4 in favour of chef 11.4.0