remove unecessary core window header usage

frontends/atari/certview.c

@@ -28,7 +28,6 @@
 #include "utils/messages.h"
 #include "utils/utils.h"
 #include "desktop/sslcert_viewer.h"
-#include "desktop/core_window.h"
 
 #include "atari/gui.h"
 #include "atari/misc.h"

frontends/atari/cookies.c

@@ -23,7 +23,6 @@
 #include "netsurf/mouse.h"
 #include "netsurf/plotters.h"
 #include "desktop/cookie_manager.h"
-#include "desktop/core_window.h"
 
 #include "atari/treeview.h"
 #include "atari/cookies.h"

frontends/atari/history.c

@@ -23,7 +23,6 @@
 #include "utils/messages.h"
 #include "netsurf/mouse.h"
 #include "desktop/global_history.h"
-#include "desktop/core_window.h"
 
 #include "atari/treeview.h"
 #include "atari/history.h"

frontends/atari/hotlist.c

@@ -31,7 +31,6 @@
 #include "content/content.h"
 #include "desktop/hotlist.h"
 #include "desktop/tree.h"
-#include "desktop/core_window.h"
 #include "desktop/textinput.h"
 
 #include "atari/gui.h"

frontends/atari/treeview.c

@@ -30,6 +30,7 @@
 #include "netsurf/plotters.h"
 #include "netsurf/mouse.h"
 #include "desktop/treeview.h"
+#include "desktop/core_window.h"
 
 #include "atari/gui.h"
 #include "atari/plot/plot.h"

frontends/atari/treeview.h

@@ -19,10 +19,11 @@
 #ifndef NSATARI_TREEVIEW_H
 #define NSATARI_TREEVIEW_H
 
-#include "desktop/core_window.h"
 #include "atari/gui.h"
 #include "atari/gemtk/gemtk.h"
 
+struct core_window_callback_table;
+
 /**
  * Default AES Window widgets for a treeview window, can be passed to
  * atari_treeview_create as the flags parameter to have an standardized treeview