Remove deprecated button and default variant

ee/app/assets/javascripts/vue_shared/license_compliance/components/add_license_form.vue

 <script>
-import { GlDeprecatedButton } from '@gitlab/ui';
+import { GlButton } from '@gitlab/ui';
 import LoadingButton from '~/vue_shared/components/loading_button.vue';
 import { LICENSE_APPROVAL_STATUS } from '../constants';
 import AddLicenseFormDropdown from './add_license_form_dropdown.vue';
@@ -9,7 +9,7 @@ export default {
   name: 'AddLicenseForm',
   components: {
     AddLicenseFormDropdown,
-    GlDeprecatedButton,
+    GlButton,
     LoadingButton,
   },
   LICENSE_APPROVAL_STATUS,
@@ -95,13 +95,12 @@ export default {
       data-qa-selector="add_license_submit_button"
       @click="addLicense"
     />
-    <gl-deprecated-button
+    <gl-button
       class="js-cancel"
-      variant="default"
       :disabled="loading"
       @click="closeForm"
     >
       {{ s__('LicenseCompliance|Cancel') }}
-    </gl-deprecated-button>
+    </gl-button>
   </div>
 </template>