Use JSON.parse instead of deprecated goog.json.parse.

Thanks to [] shared libraries at Google now produce valid JSON which allows using JSON.parse. It is safer and faster than goog.json.parse which uses eval by default.

NOTE: All shared libraries producing JSON at Google were changed to produce valid JSON. However, if your code uses a custom way of producing JSON (not using the shared libraries) or if your code parses JSON generated a long time ago and stored, this CL might break you so please review with care.

Design doc: []

Tested:
    TAP --sample for global presubmit queue
    []

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=166454709

java/google/registry/ui/js/registrar/contact_settings.js

@@ -165,7 +165,7 @@ registry.registrar.ContactSettings.prototype.sendDelete = function() {
     throw new Error('Email to delete does not match model.');
   }
   var modelCopy = /** @type {!Object}
-                   */ (goog.json.parse(goog.json.serialize(this.model)));
+                   */ (JSON.parse(goog.json.serialize(this.model)));
   goog.array.removeAt(modelCopy.contacts, ndxToDel);
   this.resource.update(modelCopy, goog.bind(this.handleDeleteResponse, this));
 };