Implement Gregory Cooper's changes
Implement Gregory Cooper's changes

-remove unnecessary import
-fix formatting of the frtime:provide block
-remove unnecessary newlines.
-apply Dr.Racket formatting.
https://github.com/plt/racket/pull/138

mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket