Remove Cardano <2.4.3 compatibility branches

[marekrjpolak]

Description

As 2.4.3 fw is required for Cardano since previous PR, we can remove correspondent backward compatibility code branches.

Related Issue

Resolve #10504

[marekrjpolak]

/rebase

[github-actions]

Start rebasing: https://github.com/trezor/trezor-suite/actions/runs/7502885033

[github-actions]

Rebasing failed, please rebase manually.

[mroz22]

please @martykan take this burden off @marekrjpolak and finish this :D once you have time, no hurry here definitely.
what I see here missing is that we should bump required fw versions for cardano calls in config.ts

[martykan]

Maybe it's also a good time to get rid of this?

trezor-suite/packages/connect/src/api/cardano/api/cardanoSignTransaction.ts

Lines 40 to 53 in 6b97cdb

	// todo: remove when listed firmwares become mandatory for cardanoSignTransaction
	const CardanoSignTransactionFeatures = Object.freeze({
	TransactionStreaming: ['0', '2.4.2'],
	TokenMinting: ['0', '2.4.3'],
	Multisig: ['0', '2.4.3'],
	NetworkIdInTxBody: ['0', '2.4.4'],
	OutputDatumHash: ['0', '2.4.4'],
	ScriptDataHash: ['0', '2.4.4'],
	Plutus: ['0', '2.4.4'],
	KeyHashStakeCredential: ['0', '2.4.4'],
	Babbage: ['0', '2.5.2'],
	CIP36Registration: ['0', '2.5.3'],
	CIP36RegistrationExternalPaymentAddress: ['0', '2.5.4'],
	});

But we would have to bump higher, to 2.5.4

Edit: removed and bumped to 2.6.0