wxGUI: don't mention r.colors for 'create color rules' dialog, it's misleading

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@53800 15284696-431f-4ddb-bdfa-cd5b030d7da7

gui/wxpython/xml/menudata.xml

@@ -1067,7 +1067,6 @@
               <help>Interactive management of raster color tables.</help>
               <keywords>raster,color table</keywords>
               <handler>RulesCmd</handler>
-              <command>r.colors</command>
             </menuitem>
             <menuitem>
               <label>Export color table</label>