finality service is no longer needed after Astrid standalone is released
we use milestones in our chain tip mode sync algorithm
we no longer need it in the RPCs for getting finalised blocks (check rpchelper._GetBlockNumber) because we can use the existing logic for ethereum which is to use GetFinalizedBlockNumber which uses ReadForkchoiceFinalized (no changes needed for this, already happening)
Goal of this task is to completely remove all code in polygon/bor/finality package
finality service is no longer needed after Astrid standalone is released
rpchelper._GetBlockNumber) because we can use the existing logic for ethereum which is to useGetFinalizedBlockNumberwhich usesReadForkchoiceFinalized(no changes needed for this, already happening)Goal of this task is to completely remove all code in polygon/bor/finality package