remove async lifecycle from global_search_bar plugin (#112058) (#112104)

Co-authored-by: Pierre Gayvallet <[email protected]>

x-pack/plugins/global_search_bar/public/plugin.tsx

@@ -23,7 +23,7 @@ export interface GlobalSearchBarPluginStartDeps {
 }
 
 export class GlobalSearchBarPlugin implements Plugin<{}, {}> {
-  public async setup() {
+  public setup() {
     return {};
   }