Do not vendor cookbooks using Berkshelf anymore

Instead, use the Berkshelf support in knife-solo and the
vagrant-berkshelf plugin on Vagrant

cookbooks/logrotate/templates/default/logrotate.erb

@@ -1,19 +0,0 @@
-# This file was generated by Chef for <%= node['fqdn'] %>.
-# Do not modify this file by hand!
-
-<%= @path %> {
-<%- if @frequency %>
-  <%= @frequency %>
-<%- end %>
-<%- @configurables.each do |name, value| %>
-  <%= "#{name} #{value}" %>
-<%- end %>
-<% @directives.each do |o| -%>
-  <%= o %>
-<% end -%>
-<%- @scripts.each do |script_name, script| %>
-  <%= script_name %>
-    <%= script %>
-  endscript
-<%- end %>
-}