Remove line that doesn't do anything

This module doesn't have any methods. It's just a namespace that
contains all the other controller concerns, but those concerns are
included in Spree::StoreController, so as far as I can tell this line
does nothing.

Author: jarednorman

lib/controllers/frontend/spree/users_controller.rb

@@ -5,8 +5,6 @@ class Spree::UsersController < Spree::StoreController
   prepend_before_action :load_object, only: [:show, :edit, :update]
   prepend_before_action :authorize_actions, only: :new
 
-  include Spree::Core::ControllerHelpers
-
   def show
     @orders = @user.orders.complete.order('completed_at desc')
   end