Drop Thunar launcher from panel.

xfce-settings/etcskel/.config/xfce4/panel/launcher-9.rc

-[Global]
-MoveFirst=false
-ArrowPosition=0
-
-[Entry 0]
-Name=Thunar
-Comment=Менеджер файлов
-Icon=Thunar
-Exec=thunar
-Terminal=false
-StartupNotify=true
-

xfce-settings/etcskel/.config/xfce4/panel/launcher-9/13015098300.desktop

-[Desktop Entry]
-Type=Application
-Name=Thunar
-Comment=Менеджер файлов
-Icon=slinux-thunar
-Exec=thunar
-Path=
-Terminal=false
-StartupNotify=true
-

xfce-settings/etcskel/.config/xfce4/xfconf/xfce-perchannel-xml/xfce4-panel.xml

@@ -74,13 +74,6 @@
         <value type="string" value="13015098300.desktop"/>
       </property>
     </property>
-    <property name="plugin-9" type="string" value="launcher">
-      <property name="move-first" type="bool" value="false"/>
-      <property name="arrow-position" type="bool" value="false"/>
-      <property name="items" type="array">
-        <value type="string" value="13015098300.desktop"/>
-      </property>
-    </property>
     <property name="plugin-10" type="string" value="pager">
       <property name="rows" type="uint" value="2"/>
       <property name="show-names" type="bool" value="false"/>