Don't show Order History if account can't place orders

I think you misunderstand the permission for "create orders". The permission allows an account to use the store administration backend to manually create orders. The role is used for accounts that you want to be store administrators. The order history tab is used for customers or store administrators to review previously created orders by a customer account. If your patch is implemented, only store administrators would be able to review past orders, not the customers who made them. And if you gave customers the "create orders" permission, they would be able to review their order history but they would also be able to create orders for anyone, something you definitely don't want to do.