[gnome-control-center] mouse: Remove useless GtkGrid

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

commit d99269182dd373c70b219416b6c8a43ae8d99a94
Author: Christopher Davis <christopherdavis gnome org>
Date:   Sat Jan 15 00:55:23 2022 -0800

    mouse: Remove useless GtkGrid
    
    Also move the margins to the box itself and remove the
    horizontal margins.

 panels/mouse/cc-mouse-panel.ui | 44 +++++++++++++++++-------------------------
 1 file changed, 18 insertions(+), 26 deletions(-)
---
diff --git a/panels/mouse/cc-mouse-panel.ui b/panels/mouse/cc-mouse-panel.ui
index 6290917da..08dd8b3e9 100644
--- a/panels/mouse/cc-mouse-panel.ui
+++ b/panels/mouse/cc-mouse-panel.ui
@@ -21,35 +21,27 @@
                         <property name="subtitle" translatable="yes">Sets the order of physical buttons on 
mice and touchpads.</property>
                         <property name="subtitle-lines">0</property>
                         <child>
-                          <object class="GtkGrid">
-                            <property name="row_spacing">2</property>
-                            <property name="column_spacing">16</property>
-                            <property name="margin_start">20</property>
-                            <property name="margin_end">20</property>
+                          <object class="GtkBox" id="primary_button_box">
+                            <property name="valign">center</property>
+                            <property name="homogeneous">True</property>
                             <property name="margin_top">12</property>
                             <property name="margin_bottom">12</property>
+                            <style>
+                             <class name="linked"/>
+                            </style>
+                            <child>
+                              <object class="GtkToggleButton" id="primary_button_left">
+                                <property name="hexpand">True</property>
+                                <property name="label" translatable="yes">Left</property>
+                                <property name="height_request">35</property>
+                              </object>
+                            </child>
                             <child>
-                              <object class="GtkBox" id="primary_button_box">
-                                <property name="valign">center</property>
-                                <property name="homogeneous">True</property>
-                                <style>
-                                 <class name="linked"/>
-                                </style>
-                                <child>
-                                  <object class="GtkToggleButton" id="primary_button_left">
-                                    <property name="hexpand">True</property>
-                                    <property name="label" translatable="yes">Left</property>
-                                    <property name="height_request">35</property>
-                                  </object>
-                                </child>
-                                <child>
-                                  <object class="GtkToggleButton" id="primary_button_right">
-                                    <property name="hexpand">True</property>
-                                    <property name="label" translatable="yes">Right</property>
-                                    <property name="group">primary_button_left</property>
-                                    <property name="height_request">35</property>
-                                  </object>
-                                </child>
+                              <object class="GtkToggleButton" id="primary_button_right">
+                                <property name="hexpand">True</property>
+                                <property name="label" translatable="yes">Right</property>
+                                <property name="group">primary_button_left</property>
+                                <property name="height_request">35</property>
                               </object>
                             </child>
                           </object>