Remove superfluous util module includes

lib/vagrant/action/vm/check_guest_additions.rb

@@ -5,8 +5,6 @@ module Vagrant
       # installed and prints a warning if they're not detected or if the
       # version does not match the installed VirtualBox version.
       class CheckGuestAdditions
-        include Util
-
         def initialize(app, env)
           @app = app
         end

lib/vagrant/action/warden.rb

@@ -7,7 +7,6 @@ module Vagrant
     # exceptional events, and by providing a simple callback, can clean up
     # in any erroneous case.
     class Warden
-      include Util
       attr_accessor :actions, :stack
 
       def initialize(actions, env)

lib/vagrant/environment.rb

@@ -10,8 +10,6 @@ module Vagrant
     HOME_SUBDIRS = ["tmp", "boxes"]
     DEFAULT_VM = :default
 
-    include Util
-
     attr_reader :parent     # Parent environment (in the case of multi-VMs)
     attr_reader :vm_name    # The name of the VM (internal name) which this environment represents