Hi,
The "sold by" is there because you have shipping per vendor.
It means that your customer will have to choose the shipping method for each vendor in his cart.
We display the information of the vendor in that place, HikaMarket put the name for this "virtual warehouse" dedicated to the vendor.
If you don't want to show it, you can do not display the "$group->name".
Or you can do not use the shipping per vendor feature.
But I wanna to say : it is not a bug, it is really a feature.
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.