Use connect_one_way when doors are blocked

Shuffler doesn't respect blocked doors yet so it may create an unbeatable layout, and the item placer will panic. But that's better than silently giving the player something impossible

DoorShuffle.py

@@ -124,7 +124,7 @@ def connect_one_way(world, entrancename, exitname, player, skipSpoiler=False):
 
     # if these were already connected somewhere, remove the backreference
     if entrance.connected_region is not None:
-        entrance.connected_region.entrances.remove(entrance, player)
+        entrance.connected_region.entrances.remove(entrance)
     if ext.connected_region is not None:
         ext.connected_region.entrances.remove(ext)
 
@@ -205,7 +205,12 @@ def maybe_connect_two_way(world, a, b, player):
         return
     # Connect supported types
     if a.type == DoorType.Normal or a.type == DoorType.SpiralStairs:
-        connect_two_way(world, a.name, b.name, player)
+        if a.blocked:
+            connect_one_way(world, b.name, a.name, player)
+        elif b.blocked:
+            connect_one_way(world, a.name, b.name, player)
+        else:
+            connect_two_way(world, a.name, b.name, player)
         return
     # If we failed to account for a type, panic
     raise RuntimeError('Unknown door type ' + a.type.name)