gtk/gtktree.lisp: Remove unused callback-setter.

This broke the build, which is a shame.

diff --git a/gtk/gtktree.lisp b/gtk/gtktree.lisp
index e882bdb..c93741e 100644 (file)
--- a/gtk/gtktree.lisp
+++ b/gtk/gtktree.lisp
@@ -847,6 +847,7 @@ then the model will sort using this function."
   (column tree-view-column)
   (base-column (or null tree-view-column)))
 
+#+(or)
 (define-callback-setter tree-view-set-column-drag-function tree-view boolean
   (column tree-view-column) 
   (prev tree-view-column)