XF 2.2 How to register users without email?

[EvadersRP]

I want users to register without email address, Just with Username and password and some other custom user fields.
I know that if we register users from admin panel we can skip email address.

Can someone please help me with modifying xenforo register users code so that I can achieve this from main front end as well.

Note: I want to remove email field completely (not just registering users without email confirmation)


Thanks.