Change: simplified water region evaluation, removed savegame data (#11750)

src/genworld.cpp

@@ -35,7 +35,6 @@
 #include "string_func.h"
 #include "thread.h"
 #include "tgp.h"
-#include "pathfinder/water_regions.h"
 
 #include "safeguards.h"
 
@@ -173,8 +172,6 @@ static void _GenerateWorld()
 			}
 		}
 
-		InitializeWaterRegions();
-
 		BasePersistentStorageArray::SwitchMode(PSM_LEAVE_GAMELOOP);
 
 		ResetObjectToPlace();