Removed unused usings

Terminal.Gui/Application.cs

@@ -1,11 +1,7 @@
-using System.Collections.Generic;
 using System.Diagnostics;
 using System.Globalization;
 using System.Reflection;
-using System.Reflection.Metadata.Ecma335;
 using System.Text.Json.Serialization;
-using Microsoft.CodeAnalysis;
-using static Unix.Terminal.Curses;
 
 namespace Terminal.Gui;
 

Terminal.Gui/Views/Menu/MenuBar.cs

@@ -1496,7 +1496,7 @@ public class MenuBar : View
     // Set in OnInvokingKeyBindings. null means no sub-menu is selected for activation.
     private MenuItem _menuItemToSelect;
     private bool _openedByAltKey;
-    //private bool _openedByHotKey;
+    private bool _openedByHotKey;
 
     /// <summary>
     ///     Called when a key bound to Command.Select is pressed. Either activates the menu item or runs it, depending on