[gtk+] Drop removed api from the docs

[Matthias Clasen <matthiasc src gnome org>]

commit e7cab2bc0ceab2d3d44eb181dbedfecbdf98416a
Author: Matthias Clasen <mclasen redhat com>
Date:   Tue Jan 16 23:33:40 2018 -0500

    Drop removed api from the docs
    
    This should have been part of the previous commit.

 docs/reference/gdk/gdk4-sections.txt |    4 ----
 1 files changed, 0 insertions(+), 4 deletions(-)
---
diff --git a/docs/reference/gdk/gdk4-sections.txt b/docs/reference/gdk/gdk4-sections.txt
index 8a2108a..eff5965 100644
--- a/docs/reference/gdk/gdk4-sections.txt
+++ b/docs/reference/gdk/gdk4-sections.txt
@@ -135,10 +135,6 @@ gdk_display_put_event
 gdk_display_has_pending
 gdk_display_is_rgba
 gdk_display_is_composited
-gdk_display_supports_cursor_color
-gdk_display_supports_cursor_alpha
-gdk_display_get_default_cursor_size
-gdk_display_get_maximal_cursor_size
 gdk_display_get_default_group
 gdk_display_supports_shapes
 gdk_display_supports_input_shapes