[seahorse] pgp/keyserver-search: Remove on_widget_delete_event

[Niels De Graef <nielsdg src gnome org>]

commit 2acfaa130d7d95258de5c1e410cb627933440183
Author: Niels De Graef <nielsdegraef gmail com>
Date:   Sun Mar 21 21:24:31 2021 +0100

    pgp/keyserver-search: Remove on_widget_delete_event
    
    ... which is a remnant of the now removed SeahorseWidget object.

 pgp/seahorse-keyserver-search.ui | 1 -
 1 file changed, 1 deletion(-)
---
diff --git a/pgp/seahorse-keyserver-search.ui b/pgp/seahorse-keyserver-search.ui
index 41dfa24a..557ade9c 100644
--- a/pgp/seahorse-keyserver-search.ui
+++ b/pgp/seahorse-keyserver-search.ui
@@ -6,7 +6,6 @@
     <property name="border_width">18</property>
     <property name="use_header_bar">1</property>
     <property name="title" translatable="yes">Find Remote Keys</property>
-    <signal name="delete_event" handler="on_widget_delete_event"/>
     <child internal-child="vbox">
       <object class="GtkBox">
         <property name="visible">True</property>