test: remove workaround for fixed Menu.closePopup issue

spec/api-menu-spec.ts

@@ -816,13 +816,10 @@
 
     it('should emit menu-will-close event', (done) => {
       menu.on('menu-will-close', () => { done(); });
       menu.popup({ window: w });
-      // https://github.com/electron/electron/issues/19411
-      setTimeout().then(() => {
-        menu.closePopup();
-      });
+      menu.closePopup();
     });
 
     it('returns immediately', () => {
       const input = { window: w, x: 100, y: 101 };
       const output = menu.popup(input) as unknown as {x: number, y: number, browserWindow: BrowserWindow};
@@ -849,22 +846,16 @@
 
       expect(x).to.equal(100);
       expect(y).to.equal(101);
-      // https://github.com/electron/electron/issues/19411
-      setTimeout().then(() => {
-        menu.closePopup();
-      });
+      menu.closePopup();
     });
 
     it('works with a given BrowserWindow, no options, and a callback', (done) => {
       menu.popup({ window: w, callback: () => done() });
-      // https://github.com/electron/electron/issues/19411
-      setTimeout().then(() => {
-        menu.closePopup();
-      });
+      menu.closePopup();
     });
 
     it('prevents menu from getting garbage-collected when popuping', async () => {
       const menu = Menu.buildFromTemplate([{ role: 'paste' }]);
       menu.popup({ window: w });
 
       // Keep a weak reference to the menu.