more work on gtk & code cleanup

Pilz.UI.WinForms/Dialogs/FlyoutBase.cs

@@ -1,6 +1,5 @@
 using Pilz.UI.Dialogs;
 using System.ComponentModel;
-using System.Diagnostics.CodeAnalysis;
 
 namespace Pilz.UI.WinForms.Dialogs;
 
@@ -150,7 +149,7 @@ public partial class FlyoutBase : UserControl
         tableLayoutPanel_ActionPanel.RowStyles.Add(new RowStyle());
         tableLayoutPanel_ActionPanel.Controls.Add(button_Cancel, 2, 0);
         tableLayoutPanel_ActionPanel.Controls.Add(button_Accept, 1, 0);
-        
+
         // FlyoutBase
         AutoScaleDimensions = new SizeF(7F, 15F);
         AutoScaleMode = AutoScaleMode.Font;