remove unused includes

Author: Try

game/commandline.cpp

@@ -4,8 +4,6 @@
 #include <Tempest/TextCodec>
 #include <cstring>
 
-#include "gothic.h"
-
 #include "utils/installdetect.h"
 #include "utils/fileutil.h"
 #include "utils/string_frm.h"

game/graphics/mdlvisual.cpp

@@ -9,7 +9,6 @@
 #include "world/objects/interactive.h"
 #include "world/objects/item.h"
 #include "world/world.h"
-#include "utils/fileext.h"
 #include "gothic.h"
 
 using namespace Tempest;