Revert "Force some includes, see if that fixes the buildbot."

This reverts commit ec43686f.

plugins/thunar-tpa/thunar-tpa.c

@@ -26,8 +26,7 @@
 #include <libxfce4ui/libxfce4ui.h>
 #include <libxfce4panel/libxfce4panel.h>
 #include <thunar-tpa/thunar-tpa-bindings.h>
-#include <libxfce4panel/xfce-panel-macros.h>
-#include <libxfce4panel/xfce-panel-plugin.h>
+
 
 
 typedef struct _ThunarTpaClass ThunarTpaClass;