Remove deprecated features

[cptartur]

All deprecated modules (except those necessary for handling old transaction version if they remain supported) should be removed entirely from starknet.py.

Checklist with deprecated features:

• [ ] AccountClient.prepare_invoke_function
• [ ] AccountClient.sign_transaction
• [ ] AccountClient.create_account
• [ ] AccountClient supporting transaction version=0
• [x] version field in the TransactionReceipt
• [ ] InvokeFunction as a call argument
• [ ] unsigned Declare transaction