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

src/saveload/afterload.cpp

@@ -61,7 +61,6 @@
 #include "../timer/timer.h"
 #include "../timer/timer_game_calendar.h"
 #include "../timer/timer_game_tick.h"
-#include "../pathfinder/water_regions.h"
 
 #include "saveload_internal.h"
 
@@ -3297,8 +3296,6 @@ bool AfterLoadGame()
 		}
 	}
 
-	if (IsSavegameVersionBefore(SLV_WATER_REGIONS)) InitializeWaterRegions();
-
 	return true;
 }