[jhbuild] world: fix libwnck module definition

[Alberts Muktupāvels <muktupavels src gnome org>]

commit cc9f67d2f364f7acbda70e01a6314ef692dddce5
Author: Alberts Muktupāvels <alberts muktupavels gmail com>
Date:   Sun Feb 2 23:49:53 2020 +0200

    world: fix libwnck module definition

 modulesets/gnome-world.modules | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/modulesets/gnome-world.modules b/modulesets/gnome-world.modules
index 8ade194c..61865c49 100644
--- a/modulesets/gnome-world.modules
+++ b/modulesets/gnome-world.modules
@@ -367,7 +367,7 @@
   </autotools>
 
   <autotools id="libwnck">
-    <branch checkoutdir="libwnck" module="GNOME/libwnck.git" />
+    <branch/>
     <dependencies>
       <dep package="gtk+-3" />
       <dep package="startup-notification" />