Remove shadow around scrolledwindow

usr/share/linuxmint/mintmenu/applications.ui

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<!-- Generated with glade 3.22.1 -->
+<!-- Generated with glade 3.22.2 -->
 <interface>
   <requires lib="gtk+" version="3.18"/>
   <object class="GtkWindow" id="mainWindow">
@@ -9,7 +9,7 @@
     <property name="window_position">mouse</property>
     <property name="gravity">static</property>
     <signal name="destroy" handler="on_window1_destroy" swapped="no"/>
-    <child>
+    <child type="titlebar">
       <placeholder/>
     </child>
     <child>
@@ -121,6 +121,10 @@
                         <property name="position">0</property>
                       </packing>
                     </child>
+                    <child>
+                      <object class="GtkScrolledWindow">
+                        <property name="visible">True</property>
+                        <property name="can_focus">True</property>
                         <child>
                           <object class="GtkViewport" id="viewport2">
                             <property name="visible">True</property>
@@ -165,6 +169,8 @@
                               </object>
                             </child>
                           </object>
+                        </child>
+                      </object>
                       <packing>
                         <property name="expand">True</property>
                         <property name="fill">True</property>