fix(token): disable token code experiment for sync users (#6007) r=@vladikoff

app/scripts/lib/experiments/grouping-rules/token-code.js

@@ -27,7 +27,7 @@ define(function (require, exports, module) {
     constructor() {
       super();
       this.name = 'tokenCode';
-      this.SYNC_ROLLOUT_RATE = 0.054; // 1.8% for each cohort = 5.4% total rollout
+      this.SYNC_ROLLOUT_RATE = 0.00;
     }
 
     choose(subject) {

app/scripts/models/auth_brokers/fx-desktop-v3.js

@@ -23,7 +23,7 @@ define(function (require, exports, module) {
     defaultCapabilities: _.extend({}, proto.defaultCapabilities, {
       allowUidChange: true,
       emailFirst: true,
-      tokenCode: true
+      tokenCode: false
     }),
 
     type: 'fx-desktop-v3',

app/scripts/models/reliers/sync.js

@@ -42,7 +42,7 @@ define(function (require, exports, module) {
       action: undefined,
       customizeSync: false,
       signinCode: undefined,
-      tokenCode: true
+      tokenCode: false
     }),
 
     initialize (attributes, options = {}) {

app/tests/spec/models/auth_brokers/fx-desktop-v3.js

@@ -26,7 +26,6 @@ define(function (require, exports, module) {
       it('has the expected capabilities', () => {
         assert.isTrue(broker.hasCapability('allowUidChange'));
         assert.isTrue(broker.hasCapability('emailFirst'));
-        assert.isTrue(broker.hasCapability('tokenCode'));
       });
     });