[MM-36309] Completely remove menu bar from Linux/Windows (#1718)

src/main/main.ts

@@ -845,6 +845,7 @@ function handleCloseAppMenu() {
 function handleUpdateMenuEvent(event: IpcMainEvent, menuConfig: Config) {
     const aMenu = appMenu.createMenu(menuConfig);
     Menu.setApplicationMenu(aMenu);
+    WindowManager.removeWindowMenu();
     aMenu.addListener('menu-will-close', handleCloseAppMenu);
 
     // set up context menu for tray icon

src/main/windows/windowManager.ts

@@ -548,3 +548,7 @@ function handleBrowserHistoryPush(e: IpcMainEvent, viewName: string, pathName: s
 export function getCurrentTeamName() {
     return status.currentServerName;
 }
+
+export function removeWindowMenu() {
+    status.mainWindow?.removeMenu();
+}