"vagrant_main" is no longer the default run list for chef. It now starts empty.

CHANGELOG.md

@@ -1,5 +1,8 @@
 ## 0.6.0 (unreleased)
 
+  - "vagrant_main" is no longer the default run list. Instead, chef
+    run list starts empty. It is up to you to specify all recipes in
+    the Vagrantfile now.
   - Fixed various issues with certain action middleware not working if
     the VM was not created.
   - SSH connection is retried 5 times if there is a connection refused.

lib/vagrant/provisioners/chef.rb

@@ -92,7 +92,7 @@ module Vagrant
           @log_level = :info
           @json = {
             :instance_role => "vagrant",
-            :run_list => ["recipe[vagrant_main]"]
+            :run_list => []
           }
         end