Do not vendor cookbooks using Berkshelf anymore

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

cookbooks/poise-javascript/attributes/default.rb

@@ -1,23 +0,0 @@
-#
-# Copyright 2015-2017, Noah Kantrowitz
-#
-# 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.
-#
-
-# Default inversion options.
-default['poise-javascript']['provider'] = 'auto'
-default['poise-javascript']['options'] = {}
-
-# Used for the default recipe.
-default['poise-javascript']['install_nodejs'] = true
-default['poise-javascript']['install_iojs'] = false