[GUI][Trivial] Remove hardcoded address.
[GUI][Trivial] Remove hardcoded address.

The `addnewaddressdialog.ui` has a hardcoded address used to draft the UI forms, even when it's cleaned in the view object initialization, it's better to remove it.
PIVX-Project/PIVX,Mrs-X/Darknet,Darknet-Crypto/Darknet,Mrs-X/PIVX,Mrs-X/Darknet,PIVX-Project/PIVX,PIVX-Project/PIVX,Mrs-X/Darknet,Mrs-X/PIVX,Mrs-X/PIVX,Darknet-Crypto/Darknet,Mrs-X/PIVX,PIVX-Project/PIVX,Darknet-Crypto/Darknet,PIVX-Project/PIVX,Mrs-X/Darknet,Mrs-X/PIVX,PIVX-Project/PIVX,Mrs-X/PIVX,PIVX-Project/PIVX,Mrs-X/Darknet,Darknet-Crypto/Darknet,Mrs-X/Darknet,Darknet-Crypto/Darknet,PIVX-Project/PIVX,PIVX-Project/PIVX,Darknet-Crypto/Darknet