chore: upgrade to new Zone.js API v0.6.2

BREAKING CHANGE

Removed deprecated API from NgZone
- `NgZone.overrideOnTurnStart`
- `NgZone.overrideOnTurnDone`
- `NgZone.overrideOnEventDone`
- `NgZone.overrideOnErrorHandler`

Rename NgZone API
- `NgZone.onTurnStart` => `NgZone.onUnstable`
- `NgZone.onTurnDone` => `NgZone.onMicrotaskEmpty`
- `NgZone.onEventDone` => `NgZone.onStable`

Closes #7345

modules/angular2/tsd.json

@@ -23,9 +23,6 @@
     "selenium-webdriver/selenium-webdriver.d.ts": {
       "commit": "6eebd5e90a1cbd6b47b0705ba72dbcd5baf846f3"
     },
-    "zone.js/zone.js.d.ts": {
-      "commit": "6eebd5e90a1cbd6b47b0705ba72dbcd5baf846f3"
-    },
     "angular-protractor/angular-protractor.d.ts": {
       "commit": "6eebd5e90a1cbd6b47b0705ba72dbcd5baf846f3"
     }