Remove workaround for issue fixed in Rust 1.9.
Remove workaround for issue fixed in Rust 1.9.

gwenn/rusqlite,jgallagher/rusqlite,gwenn/rusqlite,xinghun92/rusqlite,mikelodder7/rusqlcipher,mikelodder7/rusqlcipher,jgallagher/rusqlite,mikelodder7/rusqlcipher,jgallagher/rusqlite,xinghun92/rusqlite,gwenn/rusqlite,xinghun92/rusqlite