[shotwell] Remove deprecated function from Tree

[Jens Georg <jensgeorg src gnome org>]

commit 8bdbd6bdbe729915fcb3bb3c8e7acdac7c172924
Author: Jens Georg <mail jensge org>
Date:   Thu Nov 17 16:53:39 2016 +0100

    Remove deprecated function from Tree
    
    Signed-off-by: Jens Georg <mail jensge org>

 src/sidebar/Tree.vala |    1 -
 1 files changed, 0 insertions(+), 1 deletions(-)
---
diff --git a/src/sidebar/Tree.vala b/src/sidebar/Tree.vala
index 267c8de..5ba28fa 100644
--- a/src/sidebar/Tree.vala
+++ b/src/sidebar/Tree.vala
@@ -118,7 +118,6 @@ public class Sidebar.Tree : Gtk.TreeView {
         
         set_headers_visible(false);
         set_enable_search(false);
-        set_rules_hint(false);
         set_show_expanders(true);
         set_reorderable(false);
         set_enable_tree_lines(false);