Remove Shelley and Byron operation modes in cardano tools

[jasagredo]

Node removed support for unitary chains long ago, so it becomes useless to be able to analyze those.

[jasagredo]

I plan on merging this as a PR stack:

• Extract backends into separate packages #1653
• Version ledger tables and encode TxIns in big-endian #1652
• Support LSM in snapshot-converter and streaming ledger tables #1603
• LSM trees initial integration #1572
• Reorganize LedgerDB constraints #1644
• Return the last read key when doing range reads #1641
• Define SnapshotManager #1643
• Fix leaking handles in uncommitted forkers #1640
• Remove Shelley and Byron operation modes in cardano tools #1647 ←

This is a graph of the dependencies of the PRs

                 ┌─────┐       
                 │#1653│       
                 └──┬──┘       
                    │          
                 ┌──▼──┐       
                 │#1652│       
                 └──┬──┘       
                    │          
                 ┌──▼──┐       
                 │#1603│       
                 └──┬──┘       
                    │          
               ┌────┴─────┐    
            ┌──▼──┐    ┌──▼──┐ 
            │#1572│    │#1647│ 
            └─────┘    └─────┘ 
               │               
   ┌───────┬───┴───┬───────┐   
┌──▼──┐ ┌──▼──┐ ┌──▼──┐ ┌──▼──┐
│#1640│ │#1643│ │#1641│ │#1644│
└─────┘ └─────┘ └─────┘ └─────┘

[geo2a]

👍

[amesgen]

I think we also want to remove

ouroboros-consensus/ouroboros-consensus-cardano/src/unstable-cardano-tools/Cardano/Api/Protocol/Types.hs

Lines 121 to 123 in 698f67e

	data BlockType blk where
	ByronBlockType :: BlockType ByronBlockHFC
	ShelleyBlockType :: BlockType (ShelleyBlockHFC (Consensus.TPraos StandardCrypto) ShelleyEra)