Revert "Switch to 15.3+ binary log by default for diagnostics"
Revert "Switch to 15.3+ binary log by default for diagnostics"

This partially reverts commit 1e5e657fbf682bafe643f44970c60370dc0b2956.

Can't use binary log until we have a 15.3 AppVeyor machine. See
https://github.com/appveyor/ci/issues/1549

Moq/moq