Remove unnecessary calls to validator.validate in commands of NFT module

[Incede]

Description

In the NFT module’s Transfer, TransferCrossChainCommand and CrossChainTransferCommand commands, the code calls validator.validate to validate the commands parameters. Calling validator.validate on a command's verify function is unnecessary because this check is already done in the state machine logic.

Acceptance Criteria

• Remove all unnecessary calls as specified
• Update relevant unit tests

Additional Information

release/6.1.0