Drop unnecessary derive.
Drop unnecessary derive.

Ignore-this: 77fa3dee31f02d25c04ae6974d8d7ea8

darcs-hash:20081122035606-26c35-9f6ee8c8655fd46d1e3cde733c77da43cb74aa83

kirbyfan64/jhc,kirbyfan64/jhc,kirbyfan64/jhc,kirbyfan64/jhc