Hi All,
If you would like to remove the ‘Resource Center’ menu navigation area in CRM, just do the following:

Export the SiteMap customizations from CRM.
Unzip the file, then open the XML file and scroll to the end of the file and look for:
Highlight the the whole <area id=”ResourceCenter”> node and delete.
Save the XML file.
Re-Upload into CRM.
Clear [...]