[gtk+] docs: Fix the build of gdk4 documentation

[Matthias Clasen <matthiasc src gnome org>]

commit 999cf1b1dc3788f4511dbabb0baa02b2ad49999e
Author: Ting-Wei Lan <lantw src gnome org>
Date:   Mon Dec 25 00:14:05 2017 +0800

    docs: Fix the build of gdk4 documentation
    
    https://bugzilla.gnome.org/show_bug.cgi?id=791926

 docs/reference/gdk/gdk4-docs.xml |    1 -
 1 files changed, 0 insertions(+), 1 deletions(-)
---
diff --git a/docs/reference/gdk/gdk4-docs.xml b/docs/reference/gdk/gdk4-docs.xml
index 7ac6427..d27a37c 100644
--- a/docs/reference/gdk/gdk4-docs.xml
+++ b/docs/reference/gdk/gdk4-docs.xml
@@ -39,7 +39,6 @@
     <xi:include href="xml/events.xml" />
     <xi:include href="xml/event_structs.xml" />
     <xi:include href="xml/keys.xml" />
-    <xi:include href="xml/selections.xml" />
     <xi:include href="xml/gdkcontentformats.xml" />
     <xi:include href="xml/gdkcontentprovider.xml" />
     <xi:include href="xml/gdkcontentserializer.xml" />