[gnome-control-center] printers: Drop unused GtkBuilder IDs

[Robert Ancell <rancell src gnome org>]

commit 0ca1632890b9f813eca324cc14c36c058bdc8a1f
Author: Robert Ancell <robert ancell canonical com>
Date:   Fri Nov 23 12:08:42 2018 +1300

    printers: Drop unused GtkBuilder IDs

 panels/printers/pp-options-dialog.ui | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/panels/printers/pp-options-dialog.ui b/panels/printers/pp-options-dialog.ui
index e922ead37..02f3e40e5 100644
--- a/panels/printers/pp-options-dialog.ui
+++ b/panels/printers/pp-options-dialog.ui
@@ -30,19 +30,19 @@
             <property name="visible">True</property>
             <property name="homogeneous">True</property>
             <child>
-              <object class="GtkBox" id="main-vbox">
+              <object class="GtkBox">
                 <property name="visible">True</property>
                 <property name="can_focus">False</property>
                 <property name="orientation">vertical</property>
                 <property name="spacing">10</property>
                 <child>
-                  <object class="GtkBox" id="box2">
+                  <object class="GtkBox">
                     <property name="visible">True</property>
                     <property name="can_focus">False</property>
                     <property name="hexpand">True</property>
                     <property name="vexpand">True</property>
                     <child>
-                      <object class="GtkScrolledWindow" id="scrolled-window1">
+                      <object class="GtkScrolledWindow">
                         <property name="width_request">120</property>
                         <property name="visible">True</property>
                         <property name="can_focus">True</property>