Keep them in the constructor to not break the API,
but they are not used anymore.
This way of adding a share was deprecated in Nextcloud 12 (2016!),
in favor of the federated share API, in Nextcloud 28 this way to create a share was removed.
So we can cleanup as all it takes now to create a federeated share is the share token + federated user ID.
Signed-off-by: Ferdinand Thiessen <opensource@fthiessen.de>