remove now irrelevant test (ember-learn#882)

we're no longer hiding the link icon until the header is hovered, which makes this test irrelevant

tests/integration/components/class-field-description-test.js

@@ -2,13 +2,7 @@
 import EmberObject from '@ember/object';
 import { module, test } from 'qunit';
 import { setupRenderingTest } from 'ember-qunit';
-import {
-  render,
-  click,
-  findAll,
-  find,
-  triggerEvent,
-} from '@ember/test-helpers';
+import { render, click, findAll, find } from '@ember/test-helpers';
 import hbs from 'htmlbars-inline-precompile';
 
 module('Integration | Component | class field description', function (hooks) {
@@ -37,29 +31,6 @@ module('Integration | Component | class field description', function (hooks) {
     assert.dom(findAll('.args')[0]).hasText('(param1, param2, param3)');
   });
 
-  test('On hover -- the link icon shows up', async function (assert) {
-    this.set('type', 'method');
-    this.set(
-      'field',
-      EmberObject.create({
-        access: 'public',
-        deprecated: true,
-        name: 'concat',
-        description: 'concatenates',
-        params: [{ name: 'param1' }, { name: 'param2' }, { name: 'param3' }],
-      })
-    );
-
-    await render(
-      hbs`<ClassFieldDescription @type={{this.type}} @field={{this.field}}/>`
-    );
-
-    await triggerEvent('.class-field-description--link', 'mouseenter');
-    assert
-      .dom('.class-field-description--link-hover')
-      .exists('The link icon appears when hovering on the method text');
-  });
-
   test('it calls the provided action on link-click with the field name as an arg', async function (assert) {
     this.set('updateAnchor', (name) => {
       assert.equal(