[shotwell] Remove another instance of disable_drag_source

[Jens Georg <jensgeorg src gnome org>]

commit 010be17d94d56f6dad9fc6df0dfd82776927685d
Author: Jens Georg <mail jensge org>
Date:   Fri Apr 22 19:07:56 2022 +0200

    Remove another instance of disable_drag_source

 src/Page.vala | 2 --
 1 file changed, 2 deletions(-)
---
diff --git a/src/Page.vala b/src/Page.vala
index 1ecb3f12..3915f21c 100644
--- a/src/Page.vala
+++ b/src/Page.vala
@@ -193,8 +193,6 @@ public abstract class Page : Gtk.ScrolledWindow {
         event_source.leave_notify_event.disconnect(on_leave_notify_event);
         event_source.scroll_event.disconnect(on_mousewheel_internal);
         
-        disable_drag_source();
-        
         event_source = null;
     }