Right click on the catalyst icon on the taskbar on the lower right. Go to the primary graphics card, then crossfirex settings. There should be an option that says "Show CrossfireX Status Icon (where applicable)". Uncheck it.
Right click on the catalyst icon on the taskbar on the lower right. Go to the primary graphics card, then crossfirex settings. There should be an option that says "Show CrossfireX Status Icon (where applicable)". Uncheck it.