Remove unused includes, bump required gtk version.

Author: mtwebster

libxapp/meson.build

@@ -3,7 +3,7 @@ glib_min_ver = '>=2.44.0'
 gio_dep = dependency('gio-2.0', version: glib_min_ver, required: true)
 gio_unix_dep = dependency('gio-unix-2.0', version: glib_min_ver, required: true)
 glib_dep = dependency('glib-2.0', version: glib_min_ver, required: true)
-gtk3_dep = dependency('gtk+-3.0', version: '>=3.16', required: true)
+gtk3_dep = dependency('gtk+-3.0', version: '>=3.22', required: true)
 gmodule_dep = dependency('gmodule-2.0', version: glib_min_ver, required: true)
 
 libdeps = []

libxapp/xapp-monitor-blanker.c

@@ -5,7 +5,7 @@
 #include <stdlib.h>
 #include <string.h>
 
-#include <gdk/gdkx.h>
+#include <gdk/gdk.h>
 #include <gtk/gtk.h>
 
 #include <glib/gi18n-lib.h>

libxapp/xapp-status-icon-monitor.c

@@ -8,7 +8,6 @@
 #include <sys/types.h>
 #include <unistd.h>
 
-#include <gdk/gdkx.h>
 #include <gtk/gtk.h>
 
 #include <glib/gi18n-lib.h>

libxapp/xapp-status-icon.c

@@ -8,7 +8,6 @@
 #include <sys/types.h>
 #include <unistd.h>
 
-#include <gdk/gdkx.h>
 #include <gtk/gtk.h>
 
 #include <glib/gi18n-lib.h>