Core/Player: Fixed Battleground double kill exploit (#20618)

Fixed by: Sirikfoll
Close: #20616

src/server/game/Entities/Player/Player.cpp

@@ -17323,7 +17323,6 @@ bool Player::LoadFromDB(ObjectGuid guid, SQLQueryHolder *holder)
 
             //join player to battleground group
             currentBg->EventPlayerLoggedIn(this);
-            currentBg->AddOrSetPlayerToCorrectBgGroup(this, m_bgData.bgTeam);
 
             SetInviteForBattlegroundQueueType(bgQueueTypeId, currentBg->GetInstanceID());
         }