Remove pin on FFOS

gistfile1.js

var pin = '0000';
var icc = navigator.mozIccManager.getIccById(navigator.mozIccManager.iccIds[0]);

if (icc.cardState === 'pinRequired') {
  var req = icc.unlockCardLock({ lockType: 'pin', pin: pin });
  req.onsuccess = function() {
    console.log('pin unlocked');
    
    var r2 = icc.setCardLock({ lockType: 'pin', pin: pin, enabled: false });
    r2.onsuccess = function() { 
      console.log('removed pin');
    }
    r2.onerror = function(err) {
      console.error('remove pin failed', err);
    }
  }
  req.onerror = function(err) {
    console.error('Could not unlock SIM', err);
  };
}
else {
  console.error('cardState is not pinRequired');
}