Remove prerelease from build.sh.
Remove prerelease from build.sh.

fscheck/FsCheck,paulyoung/FsCheck,sideeffffect/FsCheck,forki/FsCheck,ErikSchierboom/FsCheck,forki/FsCheck,jhamm/FsCheck,cloudRoutine/FsCheck,fsharp/FsCheck,ploeh/FsCheck,cloudRoutine/FsCheck,paulyoung/FsCheck,fscheck/FsCheck