message: chore(account-lib): update validity js docs
  TICKET:
diff: @@ -96,11 +96,6 @@ export abstract class TransactionBuilder extends BaseTransactionBuilder {
  *
  * @see https://wiki.polkadot.network/docs/build-transaction-construction
  */
  - /**
  - *
  - * @param firstValid
  - * @param maxDuration
  - */
  validity({ firstValid, maxDuration }: validityWindow): this {
  if (!_.isUndefined(firstValid)) {
  this.validateValue(new BigNumber(firstValid));
  