[gtk+] monitor: remove GdkScreen mention from docs

[Matthias Clasen <matthiasc src gnome org>]

commit 0839aae3c8112d023aa325f3d73d307fbd5ee0c8
Author: Matthias Clasen <mclasen redhat com>
Date:   Tue Oct 31 19:15:01 2017 -0400

    monitor: remove GdkScreen mention from docs
    
    No need to refer to GdkScreen here.

 gdk/gdkmonitor.c |    3 ---
 1 files changed, 0 insertions(+), 3 deletions(-)
---
diff --git a/gdk/gdkmonitor.c b/gdk/gdkmonitor.c
index d7fb64c..fb72148 100644
--- a/gdk/gdkmonitor.c
+++ b/gdk/gdkmonitor.c
@@ -35,9 +35,6 @@
  * monitors with gdk_display_get_monitors() and to find particular
  * monitors with gdk_display_get_primary_monitor() or
  * gdk_display_get_monitor_at_window().
- *
- * GdkMonitor was introduced in GTK+ 3.22 and supersedes earlier
- * APIs in GdkScreen to obtain monitor-related information.
  */
 
 enum {