test(overmind): fix broken test

Author: christianalfoni

packages/node_modules/overmind/src/ssr.test.ts

@@ -8,7 +8,6 @@ import {
   json,
   rehydrate,
 } from './'
-import { IS_JSON } from './utils'
 
 describe('Mock', () => {
   test('should allow changing the state', () => {
@@ -82,8 +81,7 @@ describe('Mock', () => {
     const overmind = new Overmind(config)
 
     expect(json(overmind.state)).toEqual({
-      foo: 'bar2',
-      [IS_JSON]: overmind.state
+      foo: 'bar2'
     })
   })
 })