Removing support for JSalmon signatures in Hubzilla 11
Hubzilla has introduced EdDSA signatures based on FEP-8b32 with version 9.0. Since then we have been triple signing every message with JSalmon, EdDSA and LD signatures. The latter is still required by at least Friendica and Mastodon. It is also slated for removal though...
Any objections?
