[gnome-control-center/gbsneto/panel-headerbar-cleanup: 4/19] window: Cleanup UI file

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit 11d721b29d9997b19a1f37be328fef8f8ace18ae
Author: Georges Basile Stavracas Neto <georges stavracas gmail com>
Date:   Tue Jan 18 14:26:08 2022 -0300

    window: Cleanup UI file
    
    Remove visible=True properties, receives-default, and an
    outdated GTK version declaration.

 shell/cc-window.ui | 7 -------
 1 file changed, 7 deletions(-)
---
diff --git a/shell/cc-window.ui b/shell/cc-window.ui
index dc30f54ae..45a160dda 100644
--- a/shell/cc-window.ui
+++ b/shell/cc-window.ui
@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <interface>
-  <requires lib="gtk+" version="3.20"/>
   <template class="CcWindow" parent="AdwApplicationWindow">
     <property name="default-width">980</property>
     <property name="default-height">640</property>
@@ -25,7 +24,6 @@
                 </property>
                 <child>
                   <object class="GtkButton" id="previous_button">
-                    <property name="receives_default">True</property>
                     <property name="icon_name">go-previous-symbolic</property>
                     <signal name="clicked" handler="previous_button_clicked_cb" object="CcWindow" 
swapped="yes" />
                     <accessibility>
@@ -38,8 +36,6 @@
                 </child>
                 <child>
                   <object class="GtkToggleButton" id="search_button">
-                    <property name="visible">True</property>
-                    <property name="receives_default">True</property>
                     <property name="icon_name">edit-find-symbolic</property>
                     <accessibility>
                       <property name="label" translatable="yes">Search</property>
@@ -51,7 +47,6 @@
                 </child>
                 <child type="end">
                   <object class="GtkMenuButton">
-                    <property name="visible">True</property>
                     <property name="icon-name">open-menu-symbolic</property>
                     <property name="menu-model">primary_menu</property>
                     <property name="primary">True</property>
@@ -127,7 +122,6 @@
                 <property name="hexpand">True</property>
                 <child>
                   <object class="AdwHeaderBar" id="panel_headerbar">
-                    <property name="visible">True</property>
                     <property name="hexpand">True</property>
                     <property name="show-start-title-buttons" bind-source="main_leaflet" 
bind-property="folded" bind-flags="sync-create"/>
                     <property name="show-end-title-buttons">True</property>
@@ -142,7 +136,6 @@
                         <property name="reveal-child" bind-source="main_leaflet" bind-property="folded" 
bind-flags="sync-create"/>
                         <child>
                           <object class="GtkButton" id="back">
-                            <property name="visible">True</property>
                             <property name="receives_default">False</property>
                             <property name="valign">center</property>
                             <property name="icon-name">go-previous-symbolic</property>