Codechange: Move includes for common STL headers to stdafx.

src/linkgraph/linkgraph_gui.h

@@ -15,7 +15,6 @@
 #include "../widget_type.h"
 #include "../window_gui.h"
 #include "linkgraph_base.h"
-#include <map>
 
 /**
  * Monthly statistics for a link between two stations.

src/linkgraph/linkgraphjob.h

@@ -12,7 +12,6 @@
 
 #include "../thread.h"
 #include "linkgraph.h"
-#include <list>
 #include <atomic>
 
 class LinkGraphJob;

src/linkgraph/mcf.cpp

@@ -3,7 +3,6 @@
 #include "../stdafx.h"
 #include "../core/math_func.hpp"
 #include "mcf.h"
-#include <set>
 
 #include "../safeguards.h"
 

src/linkgraph/refresh.h

@@ -12,8 +12,6 @@
 
 #include "../cargo_type.h"
 #include "../vehicle_base.h"
-#include <map>
-#include <set>
 
 /**
  * Utility to refresh links a consist will visit.