Revert "Merge pull request #2646 from WalterBright/get-autotest-running"

This reverts commit 1a7ce594188fd30238a976e8d5784eb146090a6a, reversing
changes made to 511b24a4579f7cfb3fbafaa541b93a1ba67c4705.

depends on https://github.com/D-Programming-Language/druntime/pull/633