Borknagar have parted ways with vocalist Andreas “Vintersorg” Hedlund due to “personal reasons.” With him gone, bassist Simen “I.C.S. Vortex” Hestnæs will now be handling vocal duties. The group said the following: “Due to personal reasons, Andreas “Vintersorg” Hedlund has decided to step down as the lead vocalist of BORKNAGAR. The decision is based on…