(PUP-5556) Update sprintf_hash with info that this is in sprintf
(PUP-5556) Update sprintf_hash with info that this is in sprintf

Since PUP-5556, the regular sprintf function in puppet core supports
named fields from a hash.

The sprintf_hash is therefore not needed.
HelenCampbell/puppetlabs-stdlib,DavidS/puppetlabs-stdlib,puppetlabs/puppetlabs-stdlib