NEVERHOOD: Removed debug (?) code that bypassed puzzle

The effect of the removed code was to bypass the potion-mixing
puzzle while shrunken. The puzzle works fine for me, so there's
no reason to keep this bypass. Also, it caused a dead code
warning, CID 1022345.

engines/neverhood/modules/module2800.cpp

@@ -1929,8 +1929,6 @@ Scene2806::Scene2806(NeverhoodEngine *vm, Module *parentModule, int which)
 
 	Sprite *tempSprite;
 
-	which = 3;
-
 	SetMessageHandler(&Scene2806::handleMessage);
 	SetUpdateHandler(&Scene2806::update);