build: remove wombot proxy registry from package.jsons for release (#37378)

Due to an outage with the proxy we rely on for publishing, we need
to temporarily directly publish to NPM using our own angular
credentials again.

PR Close #37378

packages/zone.js/package.json

@@ -37,9 +37,6 @@
     "url": "git://github.com/angular/angular.git",
     "directory": "packages/zone.js"
   },
-  "publishConfig":{
-    "registry":"https://wombat-dressing-room.appspot.com"
-  },
   "author": "Brian Ford",
   "license": "MIT",
   "bugs": {