wxGUI: remove i.sunhours from GUI (replaced by r.sunhours)

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@56155 15284696-431f-4ddb-bdfa-cd5b030d7da7

gui/wxpython/xml/toolboxes.xml

@@ -1522,9 +1522,6 @@
       <module-item name="i.latlong">
         <label>LatLong map</label>
       </module-item>
-      <module-item name="i.sunhours">
-        <label>Sunshine hours</label>
-      </module-item>
     </items>
   </toolbox>
   <toolbox name="SatelliteImagesProducts">