[gtk] Drop method annotation for gtk_drag_cancel()

[Emmanuele Bassi <ebassi src gnome org>]

commit bb7beb5ade3109f66aac409f2628cf8b7e3835f8
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Mon Feb 12 16:35:56 2018 +0000

    Drop method annotation for gtk_drag_cancel()
    
    The other method annotations were removed in commit c306e448b32e.
    
    There is no introspected ABI change, as g-ir-scanner would just ignore
    the annotation.
    
    This eliminates the last warning when building GTK on Linux.

 gtk/gtkdnd.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/gtk/gtkdnd.c b/gtk/gtkdnd.c
index f07a679535..f621070850 100644
--- a/gtk/gtkdnd.c
+++ b/gtk/gtkdnd.c
@@ -1511,7 +1511,7 @@ gtk_drag_check_threshold (GtkWidget *widget,
 }
 
 /**
- * gtk_drag_cancel: (method)
+ * gtk_drag_cancel:
  * @context: a #GdkDragContext, as e.g. returned by gtk_drag_begin_with_coordinates()
  *
  * Cancels an ongoing drag operation on the source side.