Remove unnecessary check from token initGenesisState

[shuse2]

Expected behavior

This code should not exist
https://github.com/LiskHQ/lisk-sdk/blob/development/framework/src/modules/token/module.ts#L299-L304

Actual behavior

In the LIP, it does not say if balance is zero, it should not include the data

Steps to reproduce

N/A

Which version(s) does this affect? (Environment, OS, etc...)

6.0.0-rc.0