Upload: remove 'X-Requested-With' header

Fix test

packages/upload/src/ajax.js

@@ -67,9 +67,9 @@ export default function upload(option) {
 
   const headers = option.headers || {};
 
-  if (headers['X-Requested-With'] !== null) {
-    xhr.setRequestHeader('X-Requested-With', 'XMLHttpRequest');
-  }
+  // if (headers['X-Requested-With'] !== null) {
+  //   xhr.setRequestHeader('X-Requested-With', 'XMLHttpRequest');
+  // }
 
   for (let item in headers) {
     if (headers.hasOwnProperty(item) && headers[item] !== null) {

test/unit/specs/upload.spec.js

@@ -34,7 +34,7 @@ describe('ajax', () => {
   it('request width header', done => {
     ajax(option);
     expect(requests[0].requestHeaders).to.eql({
-      'X-Requested-With': 'XMLHttpRequest',
+      // 'X-Requested-With': 'XMLHttpRequest',
       region: 'shanghai'
     });
     done();