Do not vendor cookbooks using Berkshelf anymore

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

cookbooks/nginx/recipes/ngx_devel_module.rb

@@ -1,41 +0,0 @@
-#
-# Cookbook:: nginx
-# Recipes:: devel
-#
-# Author:: Arthur Freyman (<afreyman@riotgames.com>)
-#
-# Copyright:: 2013-2017, Riot Games
-#
-# 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.
-#
-
-devel_src_filename = ::File.basename(node['nginx']['devel']['url'])
-devel_src_filepath = "#{Chef::Config['file_cache_path']}/#{devel_src_filename}"
-devel_extract_path = "#{Chef::Config['file_cache_path']}/nginx-devel-#{node['nginx']['devel']['version']}"
-
-remote_file devel_src_filepath do
-  source   node['nginx']['devel']['url']
-  checksum node['nginx']['devel']['checksum']
-end
-
-bash 'extract_devel_module' do
-  cwd  ::File.dirname(devel_src_filepath)
-  code <<-EOH
-    mkdir -p #{devel_extract_path}
-    tar xzf #{devel_src_filename} -C #{devel_extract_path}
-  EOH
-  not_if { ::File.exist?(devel_extract_path) }
-end
-
-node.run_state['nginx_configure_flags'] =
-  node.run_state['nginx_configure_flags'] | ["--add-module=#{devel_extract_path}/ngx_devel_kit-#{node['nginx']['devel']['version']}"]