There are couple of cool tricks to hiding this. If you are a developer head over here http://www.learningsharepoint.com/2012/08/09/sharepoint-2013-hide-newsfeed-skydrive-sites-deltasuitelinks/ 

For us IT pro’s I PowerShell baby

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$wa = Get-SPWebApplication
# This can be an empty string
$wa.SuiteBarBrandingElementHtml = ” ”
#Save your change
$wa.Update()

Cheers