Remove nock#restore call from actions.spec.js

This call was unmocking all of our HTTP requests, allowing further test cases
to hit the network. Calling nock#restore should not be required.

test/unit/ui/app/actions.spec.js

@@ -1196,7 +1196,6 @@ describe('Actions', () => {
 
   describe('#pairUpdate', () => {
     beforeEach(() => {
-
       nock('https://shapeshift.io')
         .defaultReplyHeaders({ 'access-control-allow-origin': '*' })
         .get('/marketinfo/btc_eth')
@@ -1208,10 +1207,6 @@ describe('Actions', () => {
         .reply(200)
     })
 
-    afterEach(() => {
-      nock.restore()
-    })
-
     it('', () => {
       const store = mockStore()
       // issue with dispatch action in callback not showing