Remove now-unneeded include.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@4301 c06c8d41-db1a-0410-9941-cceddc491573

Created by  dolorous  on April 17, 2008
PS43FJWMTGVP3ZMDCIYB6E65QTDDIPH7V57WPPSXRRXUTVOPQXDQC
Change contents