Do not vendor cookbooks using Berkshelf anymore

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

cookbooks/redis/templates/default/default_redis-server.erb

@@ -1,12 +0,0 @@
-# redis-server configure options
-
-# ULIMIT: Call ulimit -n with this argument prior to invoking Redis itself.
-# This may be required for high-concurrency environments. Redis itself cannot
-# alter its limits as it is not being run as root. (default: do not call
-# ulimit)
-#
-<% if node["redis"]["ulimit"] && !node["redis"]["ulimit"].empty? %>
-ULIMIT=<%= node["redis"]["ulimit"] %>
-<% else %>
-# ULIMIT=65536
-<% end %>