Do not vendor cookbooks using Berkshelf anymore

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

cookbooks/apache2/templates/default/security.conf.erb

@@ -1,32 +0,0 @@
-# Changing the following options will not really affect the security of the
-# server, but might make attacks slightly more difficult in some cases.
-
-#
-# ServerTokens
-# This directive configures what you return as the Server HTTP response
-# Header. The default is 'Full' which sends information about the OS-Type
-# and compiled in modules.
-# Set to one of:  Full | OS | Minimal | Minor | Major | Prod
-# where Full conveys the most information, and Prod the least.
-#
-ServerTokens <%= node['apache']['servertokens'] %>
-
-#
-# Optionally add a line containing the server version and virtual host
-# name to server-generated pages (internal error documents, FTP directory
-# listings, mod_status and mod_info output etc., but not CGI generated
-# documents or custom error documents).
-# Set to "EMail" to also include a mailto: link to the ServerAdmin.
-# Set to one of:  On | Off | EMail
-#
-ServerSignature <%= node['apache']['serversignature'] %>
-
-#
-# Allow TRACE method
-#
-# Set to "extended" to also reflect the request body (only for testing and
-# diagnostic purposes).
-#
-# Set to one of:  On | Off | extended
-#
-TraceEnable <%= node['apache']['traceenable'] %>