refactor: remove duplicate spread factor accumulator update logic

[p0mvn]

Closes: #XXX

What is the purpose of the change

Removed duplicate CL spread factor accumulator refetch.

Note that this is already achieved by the call to this:

osmosis/x/concentrated-liquidity/tick.go

Line 122 in 0f654ff

initialSpreadRewardGrowthOppositeDirectionOfLastTraversal, err := k.getInitialSpreadRewardGrowthOppositeDirectionOfLastTraversalForTick(ctx, pool, tickIndex)

The above method does exactly the same operation as the removed logic:

osmosis/x/concentrated-liquidity/spread_rewards.go

Lines 142 to 149 in 446f987

	currentTick := pool.GetCurrentTick()
	if currentTick >= tick {
	spreadRewardAccumulator, err := k.GetSpreadRewardAccumulator(ctx, pool.GetId())
	if err != nil {
	return sdk.DecCoins{}, err
	}
	return spreadRewardAccumulator.GetValue(), nil
	}

Testing

• Covered by existing tests

[AlpinYukseloglu]

ACK since this was extracted from #7622 which I reviewed/approved

[ValarDragon]

that was tricky to convince myself was already here haha

Good job, nice gas savings :)