vrf: T31: bugfix after converting remove list to dict
vrf: T31: bugfix after converting remove list to dict

The list of VRFs to remove has been converted to a dict. The deletion of a VRF
was no longer triggered as the logic still thought it is a list.

vyos/vyos-1x,vyos/vyos-1x,vyos/vyos-1x,vyos/vyos-1x