[gitg/highlighting] Remove debug statement

[Jesse van den Kieboom <jessevdk src gnome org>]

commit 14debb7729cf3db2ef433821e64e03e2e493982d
Author: Jesse van den Kieboom <jessevdk gnome org>
Date:   Wed Dec 23 01:00:00 2015 +0100

    Remove debug statement

 plugins/diff/gitg-diff.vala |    4 ----
 1 files changed, 0 insertions(+), 4 deletions(-)
---
diff --git a/plugins/diff/gitg-diff.vala b/plugins/diff/gitg-diff.vala
index 2a29462..bbe1ab7 100644
--- a/plugins/diff/gitg-diff.vala
+++ b/plugins/diff/gitg-diff.vala
@@ -81,10 +81,6 @@ namespace GitgDiff
                                      SettingsBindFlags.GET |
                                      SettingsBindFlags.SET);
 
-                       d_diff.notify["visible"].connect(() => {
-                               stdout.printf(@"visible: $(d_diff.visible)\n");
-                       });
-
                        d_whenMapped = new Gitg.WhenMapped(d_diff);
 
                        d_selection_changed_id = history.selection_changed.connect(on_selection_changed);