neo: GetValidators return same value as GetNextBlockValidators

When OnPersist, NeoToken use GetValidators to set storage NextValidators. And getNextBlockValidators just read the storage. But getValidtors also call GetValidators return the same value.

This is confusing. https://github.com/neo-project/neo/blob/919cc804de99b299c1f79f9c4cb14d3411e588c0/neo/SmartContract/Native/Tokens/NeoToken.cs#L111-L117 https://github.com/neo-project/neo/blob/919cc804de99b299c1f79f9c4cb14d3411e588c0/neo/SmartContract/Native/Tokens/NeoToken.cs#L238-L248

https://github.com/neo-project/neo/blob/919cc804de99b299c1f79f9c4cb14d3411e588c0/neo/SmartContract/Native/Tokens/NeoToken.cs#L213-L216