Replace deprecated button on related items

ee/app/assets/javascripts/related_items_tree/components/tree_item_body.vue

@@ -5,7 +5,7 @@ import {
   GlModalDirective,
   GlLink,
   GlIcon,
-  GlDeprecatedButton,
+  GlButton,
   GlTooltip,
 } from '@gitlab/ui';
 import { isEmpty } from 'lodash';
@@ -30,7 +30,7 @@ export default {
     GlIcon,
     GlLink,
     GlTooltip,
-    GlDeprecatedButton,
+    GlButton,
     StateTooltip,
     ItemMilestone,
     ItemAssignees,
@@ -284,17 +284,18 @@ export default {
           </div>
         </div>
 
-        <gl-deprecated-button
+        <gl-button
           v-if="parentItem.userPermissions.adminEpic"
           v-gl-tooltip.hover
           v-gl-modal-directive="$options.itemRemoveModalId"
+          category="tertiary"
           :title="__('Remove')"
+          :aria-label="__('Remove')"
           :disabled="itemActionInProgress"
-          class="btn-svg btn-item-remove js-issue-item-remove-button qa-remove-issue-button gl-align-self-start"
+          icon="close"
+          class="js-issue-item-remove-button qa-remove-issue-button gl-align-self-start"
           @click="handleRemoveClick"
-        >
-          <gl-icon name="close" class="btn-item-remove-icon" />
-        </gl-deprecated-button>
+        />
         <span v-if="showEmptySpacer" class="gl-p-3"></span>
       </div>
     </div>

ee/spec/frontend/related_items_tree/components/tree_item_body_spec.js

 import { shallowMount, createLocalVue } from '@vue/test-utils';
 import Vuex from 'vuex';
-import { GlDeprecatedButton, GlLink, GlIcon } from '@gitlab/ui';
+import { GlButton, GlLink, GlIcon } from '@gitlab/ui';
 
 import ItemWeight from 'ee/boards/components/issue_card_weight.vue';
 
@@ -358,7 +358,7 @@ describe('RelatedItemsTree', () => {
       });
 
       it('renders item remove button when `item.userPermissions.adminEpic` is true', () => {
-        const removeButton = wrapper.find(GlDeprecatedButton);
+        const removeButton = wrapper.find(GlButton);
 
         expect(removeButton.isVisible()).toBe(true);
         expect(removeButton.attributes('title')).toBe('Remove');