Revert "DB change, migratoin and changelog"

This reverts commit af5242ecb682189c5d8276e1ab1ffe5ce844f2e5.

app/assets/javascripts/boards/models/issue.js

@@ -3,7 +3,7 @@
 /* global ListMilestone */
 /* global ListAssignee */
-import Vue from 'vue';
+import axios from '~/lib/utils/axios_utils';
 import './label';
 import { convertObjectPropsToCamelCase } from '~/lib/utils/common_utils';
 import IssueProject from './project';
@@ -133,7 +133,7 @@ class ListIssue {
     }
     const projectPath = this.project ? this.project.path : '';
-    return Vue.http.patch(`${this.path}.json`, data).then(({ body = {} } = {}) => {
+    return axios.patch(`${this.path}.json`, data).then(({ data: body = {} } = {}) => {
       /**
        * Since post implementation of Scoped labels, server can reject
        * same key-ed labels. To keep the UI and server Model consistent,

changelogs/unreleased/remove-vue-resource-from-issue.yml

+---
+title: Remove vue resource from issue
+merge_request: 32421
+author: Lee Tickett
+type: other

spec/javascripts/boards/issue_spec.js

 /* global ListIssue */
-import Vue from 'vue';
+import axios from '~/lib/utils/axios_utils';
 import '~/boards/models/label';
 import '~/boards/models/assignee';
 import '~/boards/models/issue';
@@ -175,7 +175,7 @@ describe('Issue model', () => {
   describe('update', () => {
     it('passes assignee ids when there are assignees', done => {
-      spyOn(Vue.http, 'patch').and.callFake((url, data) => {
+      spyOn(axios, 'patch').and.callFake((url, data) => {
         expect(data.issue.assignee_ids).toEqual([1]);
         done();
         return Promise.resolve();
@@ -185,7 +185,7 @@ describe('Issue model', () => {
     });
     it('passes assignee ids of [0] when there are no assignees', done => {
-      spyOn(Vue.http, 'patch').and.callFake((url, data) => {
+      spyOn(axios, 'patch').and.callFake((url, data) => {
         expect(data.issue.assignee_ids).toEqual([0]);
         done();
         return Promise.resolve();