Delete() for OrderedHash to work like a Hash (not Array)

When using delete() on an OrderedHash a user would expect the command to work more like a Hash versus an Array. The deleted key should return the 'hash' value.

posts = posts.group_by(:&user_id)

#expected

users_posts = posts.delete(@current_user.id)

#current method to get Hash-like value returned

users_posts = posts.delete([@current_user.id, posts[@current_user.id]]).last

This patch adds a custom delete method to OrderedHash.