Investigate two *HandleIdentifierProviders

[kosarko]

@milanmajchrak Does it makes sense that I'm seeing two "HandleIdentifier" providers

Originally posted by @kosarko in #1297

Is there a path where the VersionedHandleIdentifierProvider actually mints a handle? If this is not needed, update the configuration.

[kuchtiak-ufal]

Pull request: #1301

[kosarko]

#1301 merged as a part of #1282 (via dataquest-dev#1213)