fix: remove naturally finality

[NathanBSC]

Description

remove naturally finality

Rationale

naturally finality is alias of probabilistic finality in the code.

1. The probabilistic finality is only probabilistic. In extreme cases, it may be reverted without penalty, so it is not suitable to acknowledge it through the interface
2. Different application scenarios of probabilistic finality may choose different numbers of blocks. For example, 15 is recommended, while the main station uses 21 for deposits and withdrawals. but only a fixed number can be specified in the code
3. The Ethereum client will also degenerate to a probabilistic finality when the vote fails, but the number of blocks is not specified in the code; Bitcoin has probabilistic finality, and the number of blocks is not specified in the code

Example

add an example CLI or API response...

Changes

Notable changes:

• add each change in a bullet point here
• ...

[emailtovamos]

What exactly is the reason for removal of NaturallyFinalizedDist ? I didn't quite understand the rationale given.

[NathanBSC]

What exactly is the reason for removal of NaturallyFinalizedDist ? I didn't quite understand the rationale given.

reason updated