I do this on new Windows 8/8.1 computers. It just totally removes all the bloat from the Metro Start tiles except the basic Windows stuff. Open powershell and run these commands:
Get-AppXProvisionedPackage -online | Remove-AppxProvisionedPackage –online
Get-AppXPackage | Remove-AppxPackage
Voila, clean slate!
Add the Metro apps you really want through the Windows Store.