(svn r20632) -Cleanup: remove "a few" unneeded includes, and add them to some headers

src/pathfinder/npf/npf.cpp

@@ -11,7 +11,6 @@
 
 #include "../../stdafx.h"
 #include "../../debug.h"
-#include "../../landscape.h"
 #include "../../network/network.h"
 #include "../../functions.h"
 #include "../../ship.h"

src/pathfinder/yapf/yapf.h

@@ -13,7 +13,6 @@
 #define  YAPF_H
 
 #include "../../direction_type.h"
-#include "../../station_type.h"
 #include "../../track_type.h"
 #include "../../vehicle_type.h"
 #include "../pathfinder_type.h"