* [NOD-616] Remove unused methods from BlockDAG.
* [NOD-616] Remove Height from GetRawMempoolVerboseResult and TxDesc.
* [NOD-616] Replaced BlockDAG.ChainHeight with SelectedTipBlueScore.
* [NOD-616] Remove the unused BlockChainHeightByHash.
* [NOD-616] Remove the unused blockChainHeight from checkBlockHeaderContext.
* [NOD-616] Remove chainHeight from util.Block.
* [NOD-616] Remove TestChainHeight.
* [NOD-616] Update unknown rule activation warning to use blueScore.
* [NOD-616] Update thresholdState to use blueScore instead of chainHeight.
* [NOD-616] Update blockLocator to use blueScore instead of chainHeight.
* [NOD-616] Remove blockNode.chainHeight.
* [NOD-616] Fix comments and variable names.
* [NOD-616] Replace a weird for loop with a while loop.
* [NOD-616] Fix a comment.
* [NOD-616] Remove pre-allocation in blockLocator.
* [NOD-616] Coalesce checks that startHash and stopHash are not the same into the same condition.
* [NOD-616] Fix a comment.
* [NOD-616] Remove weird blueScore logic around childHashStrings.
* [NOD-616] Fix hash pointer comparison.
* [NOD-616] Fix a comment.
* [NOD-616] Add ban score to peers misusing GetBlockLocator.
* [NOD-616] Replace adding ban score with disconnecting.
* [NOD-616] Add blueScore to FilteredBlockAddedNtfn.