Fix SetupLogging not being called in game test scenario

[peppy]

See test failures in relevant PR.

[bdach]

Sorta tangential, but in scanning around usages of SetHost() to check if anything else might need a SetupLogging() call, I noticed template game projects calling SetHost(), which on closer inspection was redundant because they would call AddGame() shortly after which also sets the host (and also does the logging setup with this change). So I just deleted the SetHost() calls in 6ef2f54. They should have probably been removed as far back as #4885.