staker Id needs to be corrected in logs in getting biggest staker

[Yashk767]

Description

On feature/v1.2.0 after getStakeSnapshot batching changes in getting biggest staker, inside for loop we have:

for i := 0; i < len(stakeSnapshotArray); i++ {
		log.Debug("Propose: Staker Id: ", i)
		stake := stakeSnapshotArray[i]
		log.Debugf("Stake Snapshot of staker having stakerId %d is %s", i+1, stake)
		if stake.Cmp(biggestStake) > 0 {
			biggestStake = stake
			biggestStakerId = uint32(i + 1)
		}
	}

Here log.Debug("Propose: Staker Id: i") is incorrect as staker Id should be i+1 and
we do log it correctly after 2 lines in log.Debugf("Stake Snapshot of staker having stakerId %d is %s", i+1, stake)

So we can remove the redundant and incorrect log log.Debug("Propose: Staker Id: ", i)