Remove an unneeded include.

src/dialogs.hpp

@@ -25,6 +25,7 @@ class unit_type;
 #include "map_location.hpp"
 #include "construct_dialog.hpp"
 #include "events.hpp"
+#include "network.hpp"
 
 #include "widgets/button.hpp"
 

src/show_dialog.hpp

@@ -21,13 +21,10 @@ class display;
 
 #include "cursor.hpp"
 #include "font.hpp"
-#include "network.hpp"
 #include "tooltips.hpp"
 
 #include "widgets/menu.hpp"
 
-#include "SDL.h"
-
 #include <string>
 #include <vector>
 

src/upload_log.cpp

@@ -29,6 +29,7 @@
 #include "gamestatus.hpp"
 #include "gettext.hpp"
 #include "log.hpp"
+#include "network.hpp"
 #include "replay.hpp"
 #include "serialization/parser.hpp"
 #include "unit.hpp"