arch: Remove duplicate includes.

Hi,

This patch set removes duplicate includes from arch/.

Cheers,
Lucas

Hi,

Very sorry about the excess email.

Gmail/IMAP doesn't appear to handle drafts very well at all :(

Again, apologies to all for the noise.

Cheers,
Lucas.

OK... so even though it *appears* as thought I spammed this list like crazy, it hasn't actually sent.

I'll send through the patch sets now.