Remove CAPTCHA support from issue description.vue component

- This is no longer needed, because spam checking for
  issue task updates was disabled here:
  - Issue: https://gitlab.com/gitlab-org/gitlab-foss/-/issues/64021
  - MR: https://gitlab.com/gitlab-org/gitlab-foss/-/merge_requests/30279
- This code should have been removed in that MR, as it is now unused.

app/assets/javascripts/issue_show/components/description.vue

@@ -4,7 +4,6 @@ import $ from 'jquery';
 import { deprecatedCreateFlash as createFlash } from '~/flash';
 import { s__, sprintf } from '~/locale';
 import TaskList from '../../task_list';
-import recaptchaModalImplementor from '../../vue_shared/mixins/recaptcha_modal_implementor';
 import animateMixin from '../mixins/animate';
 
 export default {
@@ -12,7 +11,7 @@ export default {
     SafeHtml,
   },
 
-  mixins: [animateMixin, recaptchaModalImplementor],
+  mixins: [animateMixin],
 
   props: {
     canUpdate: {
@@ -87,21 +86,11 @@ export default {
           fieldName: 'description',
           lockVersion: this.lockVersion,
           selector: '.detail-page-description',
-          onSuccess: this.taskListUpdateSuccess.bind(this),
           onError: this.taskListUpdateError.bind(this),
         });
       }
     },
 
-    taskListUpdateSuccess(data) {
-      try {
-        this.checkForSpam(data);
-        this.closeRecaptcha();
-      } catch (error) {
-        if (error && error.name === 'SpamError') this.openRecaptcha();
-      }
-    },
-
     taskListUpdateError() {
       createFlash(
         sprintf(
@@ -165,7 +154,5 @@ export default {
     >
     </textarea>
     <!-- eslint-enable vue/no-mutating-props -->
-
-    <recaptcha-modal v-show="showRecaptcha" :html="recaptchaHTML" @close="closeRecaptcha" />
   </div>
 </template>

spec/frontend/issue_show/components/description_spec.js

@@ -70,36 +70,6 @@ describe('Description component', () => {
       });
   });
 
-  it('opens reCAPTCHA dialog if update rejected as spam', () => {
-    let modal;
-    const recaptchaChild = vm.$children.find(
-      // eslint-disable-next-line no-underscore-dangle
-      (child) => child.$options._componentTag === 'recaptcha-modal',
-    );
-
-    recaptchaChild.scriptSrc = '//scriptsrc';
-
-    vm.taskListUpdateSuccess({
-      recaptcha_html: '<div class="g-recaptcha">recaptcha_html</div>',
-    });
-
-    return vm
-      .$nextTick()
-      .then(() => {
-        modal = vm.$el.querySelector('.js-recaptcha-modal');
-
-        expect(modal.style.display).not.toEqual('none');
-        expect(modal.querySelector('.g-recaptcha').textContent).toEqual('recaptcha_html');
-        expect(document.body.querySelector('.js-recaptcha-script').src).toMatch('//scriptsrc');
-      })
-      .then(() => modal.querySelector('.close').click())
-      .then(() => vm.$nextTick())
-      .then(() => {
-        expect(modal.style.display).toEqual('none');
-        expect(document.body.querySelector('.js-recaptcha-script')).toBeNull();
-      });
-  });
-
   it('applies syntax highlighting and math when description changed', () => {
     const vmSpy = jest.spyOn(vm, 'renderGFM');
     const prototypeSpy = jest.spyOn($.prototype, 'renderGFM');
@@ -144,7 +114,6 @@ describe('Description component', () => {
         dataType: 'issuableType',
         fieldName: 'description',
         selector: '.detail-page-description',
-        onSuccess: expect.any(Function),
         onError: expect.any(Function),
         lockVersion: 0,
       });