Revert "channeldb: convert concurrent channel state machine calls to use Batch"
Revert "channeldb: convert concurrent channel state machine calls to use Batch"

This reverts commit e8da6dd0b48843a48cecdcff894f48e8020d940e.

LightningNetwork/lnd,aakselrod/lnd,aakselrod/lnd,LightningNetwork/lnd