Update to Pyjamas gl-button for remove icon button

ee/app/assets/javascripts/operations/components/dashboard/project_header.vue

 <script>
-import { GlDeprecatedButton, GlLink, GlTooltipDirective } from '@gitlab/ui';
-import Icon from '~/vue_shared/components/icon.vue';
+import { GlButton, GlLink, GlTooltipDirective } from '@gitlab/ui';
 import ProjectAvatar from '~/vue_shared/components/project_avatar/default.vue';
 import { __ } from '~/locale';
 
 export default {
   components: {
-    Icon,
     ProjectAvatar,
-    GlDeprecatedButton,
+    GlButton,
     GlLink,
   },
   directives: {
@@ -64,13 +62,14 @@ export default {
         <span class="js-project-name bold"> {{ project.name }}</span>
       </gl-link>
     </div>
-    <gl-deprecated-button
+    <gl-button
       v-gl-tooltip
-      class="js-remove-button bg-transparent border-0 p-0 text-secondary"
+      class="js-remove-button"
+      category="tertiary"
       :title="title"
+      :aria-label="title"
+      icon="remove"
       @click="onRemove"
-    >
-      <icon name="remove" />
-    </gl-deprecated-button>
+    />
   </div>
 </template>