code: boolean remove(BlockInfo blockInfo, RaidCodec codec) {
      if(queues.get(codec).remove(blockInfo)) {
        if (NameNode.stateChangeLog.isDebugEnabled()) {
          NameNode.stateChangeLog.debug(
                                        "BLOCK* NameSystem.RaidMissingBlocks.remove:"
                                        + blockInfo
                                        + " file "+ blockInfo.getINode()
                                        + " codec " + codec.id);
        }
        return true;
      }
      return false;
    }
docs: Remove a missing Raided block from its codec queue.