[gnome-control-center] shell: Drop unused no-show-all properties

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

commit f3e642da56c778fbe0d8405b2bd06f031ae53c80
Author: Robert Ancell <robert ancell canonical com>
Date:   Fri Oct 12 09:41:49 2018 +1300

    shell: Drop unused no-show-all properties

 shell/cc-window.ui | 3 ---
 1 file changed, 3 deletions(-)
---
diff --git a/shell/cc-window.ui b/shell/cc-window.ui
index eca04a977..fb17f833d 100644
--- a/shell/cc-window.ui
+++ b/shell/cc-window.ui
@@ -126,7 +126,6 @@
               <object class="GtkButton" id="previous_button">
                 <property name="can_focus">True</property>
                 <property name="receives_default">True</property>
-                <property name="no_show_all">True</property>
                 <signal name="clicked" handler="previous_button_clicked_cb" object="CcWindow" swapped="no" />
                 <child>
                   <object class="GtkImage">
@@ -150,7 +149,6 @@
                 <property name="visible">True</property>
                 <property name="can_focus">True</property>
                 <property name="receives_default">True</property>
-                <property name="no_show_all">True</property>
                 <child internal-child="accessible">
                   <object class="AtkObject">
                     <property name="accessible-name" translatable="yes">Search</property>
@@ -190,7 +188,6 @@
                 <child>
                   <object class="GtkLockButton" id="lock_button">
                     <property name="can_focus">True</property>
-                    <property name="no_show_all">True</property>
                     <style>
                       <class name="text-button" />
                     </style>