Hi,
You're editing the wrong view (registration and it's "registration_bootstrap" ; because you're no on Joomla 3 with bootstrap).
But, if you remove the "name from the registration, I can tell you that you will have some bug afterwards.
This field is required, and it's not for nothing. So if you remove it, the registration won't work anymore.
That's why HikaShop have options in the registration in order to have a "simplified registration".
Regards,
Jerome - Obsidev.com
HikaMarket & HikaSerial developer / HikaShop core dev team.
Also helping the HikaShop support team when having some time or couldn't sleep.
By the way, do not send me private message, use the "contact us" form instead.