Do not vendor cookbooks using Berkshelf anymore

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

cookbooks/mediawiki/.kitchen.yml

@@ -1,22 +0,0 @@
----
-driver:
-  name: vagrant
-
-provisioner:
-  name: chef_solo
-
-platforms:
-  - name: centos-6.5
-    driver: 
-        box: centos-6.5
-        box_url: https://vagrantcloud.com/baremettle/centos-6.5/version/1/provider/libvirt.box
-#  - name: debian-7.5
-#    driver:
-#      box: debian-7.5
-#      box_url: https://vagrantcloud.com/baremettle/debian-7.5/version/1/provider/libvirt.box
-
-suites:
-  - name: default
-    run_list:
-      - "recipe[mediawiki::default]"
-    attributes: