Remove debugging prints around calls to sfclayrev in driver_sfclayer

[mgduda]

This PR removes some debugging log writes around calls to sfclayrev in the driver_sfclayer subroutine. These writes led to messages like the following appearing in the log file for every model timestep:

 --- enter subroutine sfclayrev:
 --- end subroutine sfclayrev:
 --- enter subroutine sfclayrev seaice:
 --- end subroutine sfclayrev seaice:

[mgduda]

@ldfowler58 If you'd prefer, I can comment-out the log writes rather than remove them. But for consistency with calls to the old surface-layer scheme, I thought to simply remove the writes instead.

[ldfowler58]

No problems. It makes more sense to remove those write statements. I approve this PR. Thanks.