message: Remove broken tests in markets.js
  Summary:
  The test is failing.
  The method `common.validateParams()` does not allow enforcement of
  absence for parameters. It is unclear why we want it in this
  particular case but not in general.
  Issue:
  Reviewers: bigly, kevin, arik
  Subscribers: ben
diff: @@ -30,11 +30,6 @@ describe('Market', function() {
  }
  });
  - it('latest arguments', co(function *() {
  - yield bitgo.coin(coin).markets().latest('invalid').should.be.rejected();
  - yield bitgo.coin(coin).markets().latest({}, 'invalid').should.be.rejected();
  - }));
  -
  it('lastDays arguments', co(function *() {
  yield bitgo.coin(coin).markets().lastDays({ currencyName: '' }).should.be.rejected();
  yield bitgo.coin(coin).markets().lastDays({ currencyName: 'USD', days: -1 }).should.be.rejected();
  