Deprecate API v2 (#7761)

* deprecate api-v2

* remove v2 test helpers

* remove unused string

test/api/v2/user/batch-update/POST-user_batch-update.test.js

@@ -1,62 +0,0 @@
-import {
-  generateUser,
-  translate as t,
-} from '../../../../helpers/api-integration/v2';
-
-import { each } from 'lodash';
-
-describe('POST /user/batch-update', () => {
-  let user;
-
-  beforeEach(async () => {
-    user = await generateUser();
-  });
-
-  context('allowed operations', () => {
-    it('makes batch operations', async () => {
-      let task = (await user.get('/user/tasks'))[0];
-
-      let updatedUser = await user.post('/user/batch-update', [
-        {op: 'update', body: {'stats.hp': 30}},
-        {op: 'update', body: {'profile.name': 'Samwise'}},
-        {op: 'score', params: { direction: 'up', id: task.id }},
-      ]);
-
-      expect(updatedUser.stats.hp).to.eql(30);
-      expect(updatedUser.profile.name).to.eql('Samwise');
-
-      let fetchedTask = await user.get(`/user/tasks/${task.id}`);
-
-      expect(fetchedTask.value).to.be.greaterThan(task.value);
-    });
-  });
-
-  xcontext('development only operations', () => { // These tests will fail if your NODE_ENV is set to 'development' instead of 'testing'
-    let protectedOperations = {
-      'Add Ten Gems': 'addTenGems',
-      'Add Hourglass': 'addHourglass',
-    };
-
-    each(protectedOperations, (operation, description) => {
-      it(`it sends back a 500 error for ${description} operation`, async () => {
-        return expect(user.post('/user/batch-update', [
-          { op: operation },
-        ])).to.eventually.be.rejected.and.eql({
-          code: 500,
-          text: t('messageUserOperationNotFound', { operation }),
-        });
-      });
-    });
-  });
-
-  context('unknown operations', () => {
-    it('sends back a 500 error', async () => {
-      return expect(user.post('/user/batch-update', [
-        {op: 'aNotRealOperation'},
-      ])).to.eventually.be.rejected.and.eql({
-        code: 500,
-        text: t('messageUserOperationNotFound', { operation: 'aNotRealOperation' }),
-      });
-    });
-  });
-});