Do not vendor cookbooks using Berkshelf anymore

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

cookbooks/ipfs/resources/config.rb

@@ -1,26 +0,0 @@
-require 'json'
-require 'mixlib/shellout'
-
-property :key, String, name_property: true
-property :value, [String, Hash, Array, TrueClass, FalseClass], required: true
-
-action :create do
-  include_recipe 'ipfs'
-
-  execute "ipfs config --json #{new_resource.key} '#{JSON.generate(new_resource.value)}'" do
-    environment 'IPFS_PATH' => '/home/ipfs/.ipfs'
-    user 'ipfs'
-    not_if do
-      cmd = Mixlib::ShellOut.new('ipfs', 'config', new_resource.key,
-                                 user: 'ipfs',
-                                 env: { 'IPFS_PATH' => '/home/ipfs/.ipfs' })
-      cmd.run_command
-      begin
-        JSON.parse(cmd.stdout) == JSON.parse(JSON.generate(new_resource.value))
-      rescue JSON::ParserError
-        cmd.stdout.include?(new_resource.value.to_s)
-      end
-    end
-    notifies :restart, 'service[ipfs]', :delayed
-  end
-end