Removed unused imports

Ignore-this: f3b014a1ed290ebb099a0b1886ba0eac

darcs-hash:20100909124441-b22ec-0230ea8e329cc441734d1cdea9b9fbf82cded65d
Removed unused variable

Ignore-this: fa9419ab2da1641633dbfcce9fe4d068

darcs-hash:20100909124543-b22ec-9d34182cc2f480eb6f2bab237c17e989a46bff87