Disabling traps in Abyss. They don't get shifted anyway so when they do get

created it causes bugs.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@6950 c06c8d41-db1a-0410-9941-cceddc491573

Created by  haranp  on September 18, 2008
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