Do not vendor cookbooks using Berkshelf anymore

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

cookbooks/seven_zip/recipes/default.rb

@@ -1,41 +0,0 @@
-#
-# Author:: Seth Chisamore (<schisamo@chef.io>)
-# Cookbook Name:: seven_zip
-# Recipe:: default
-#
-# Copyright 2011-2016, Chef Software, Inc.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-
-windows_package node['seven_zip']['package_name'] do
-  source node['seven_zip']['url']
-  checksum node['seven_zip']['checksum']
-  options "INSTALLDIR=\"#{node['seven_zip']['home']}\"" if node['seven_zip']['home']
-  action :install
-end
-
-# update path
-windows_path 'seven_zip' do
-  path lazy {
-    if node['seven_zip']['home']
-      node['seven_zip']['home']
-    else
-      ::Win32::Registry::HKEY_LOCAL_MACHINE.open(
-        'SOFTWARE\Microsoft\Windows\CurrentVersion\App Paths\7zFM.exe',
-        ::Win32::Registry::KEY_READ
-      ).read_s('Path')
-    end
-  }
-  action :add
-end if node['seven_zip']['syspath']