significantly cleaned up includes (by IoP)

git-svn-id: https://ja2svn.mooo.com/source/ja2/trunk/GameSource/ja2_v1.13/Build@6056 3b4a5df2-a311-0410-b5c6-a8a6f20db521

TileEngine/overhead map.cpp

@@ -7,7 +7,6 @@
 	#include "sgp.h"
 	#include "vobject.h"
 	#include "tiledef.h"
-	#include "wcheck.h"
 	#include "utilities.h"
 	#include "worlddef.h"
 	#include "isometric utils.h"
@@ -31,7 +30,6 @@
 	#include "map information.h"
 	#include "Tactical Placement GUI.h"
 	#include "world items.h"
-	#include "environment.h"
 	#include "message.h"
 	#include "faces.h"
 	#include "Squads.h"