Revert location change for `_UseHelixOpenQueues` variable
Revert location change for `_UseHelixOpenQueues` variable

nit: Remove extra `if`

aspnet/AspNetCore,aspnet/AspNetCore,aspnet/AspNetCore,aspnet/AspNetCore,aspnet/AspNetCore,aspnet/AspNetCore,aspnet/AspNetCore,aspnet/AspNetCore,aspnet/AspNetCore