Remove unused methods from vagrantfile.rb

lib/vagrant/vagrantfile.rb

@@ -247,20 +247,6 @@ module Vagrant
       nil
     end
 
-    # Returns the list of defined pushes in this Vagrantfile.
-    #
-    # @return [Array<Symbol>]
-    def pushes
-      @config.push.defined_pushes
-    end
-
-    # Get the push by the given name.
-    #
-    # @return [idk]
-    def push(name)
-      @config.push.get_push(name)
-    end
-
     protected
 
     def find_vagrantfile(search_path)