|Windows 8's Metro-ised network UI|
Deleting profiles from command prompt
The only way I've found to remove wireless profiles in Windows 8 is through the console. Fire up the command prompt and meet your new friend: netsh.
To remove unwanted wireless profiles, you'll need to do so from the console. Here's how I'd delete an imaginary wireless profile called neko.
:\> netsh wlan delete profile name="neko"
Seeing what's there
If you need a list of wireless profiles Windows 8 currently saved, here's how to do it.
:\> netsh wlan show profiles
That should bring up a list of stored profiles. It's handy when cleaning up wireless clutter. Doesn't matter if it's your own Windows 8 machine, or somebody else's.