message: style(account-lib): tidy up imports in stx/utils.ts
diff: @@ -23,12 +23,10 @@ import {
  } from '@stacks/transactions';
  import { ec } from 'elliptic';
  import { StacksNetwork } from '@stacks/network';
  +import { isEmpty } from 'lodash';
  import { isValidXpub, isValidXprv } from '../../utils/crypto';
  import { InvalidParameterValueError, SigningError, UtilsError } from '../baseCoin/errors';
  -import { SignResponse } from './iface';
  import { KeyPair } from '.';
  -import { sign } from '../xtz/utils';
  -import { isEmpty } from 'lodash';
  const ContractFunctionNames = [
  'stack-stx',
  