Remove the search icon in CCPro?

System

TeamSite 6.7.1
Solaris 9

Does anyone know the proper XML customization syntax (and which xml file?) is needed to remove the search icon from CCPro's UI? Please see the image below to see what I mean. I've RTFM'd and tried numerous variations of <iwov-delete> in ui_custom.xml and search_custom.xml, but to no avail.

Thanks in advance!