We haven't used this in years. It's obsolete because this functionality
should now be provided by the more general PSA function
wrappers (`PSALoggingWrapper` generator), although that work is unfinished.
It belongs in TF-PSA-Crypto anyway. So remove it, it's one less little
amount of baggage.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>