chore: remove useless namespace.

src/Shared/HandyControlDemo_Shared/Data/Model/DemoInfoModel.cs

@@ -13,7 +13,7 @@ public class DemoInfoModel : ViewModelBase
     {
         get => _title;
 #if NET40
-            set => Set(nameof(Title), ref _title, value);
+        set => Set(nameof(Title), ref _title, value);
 #else
         set => Set(ref _title, value);
 #endif
@@ -25,7 +25,7 @@ public class DemoInfoModel : ViewModelBase
     {
         get => _selectedIndex;
 #if NET40
-            set => Set(nameof(SelectedIndex), ref _selectedIndex, value);
+        set => Set(nameof(SelectedIndex), ref _selectedIndex, value);
 #else
         set => Set(ref _selectedIndex, value);
 #endif   

src/Shared/HandyControlDemo_Shared/UserControl/Main/LeftMainContent.xaml.cs

@@ -10,7 +10,6 @@ using HandyControl.Tools;
 using HandyControlDemo.Data;
 using HandyControlDemo.ViewModel;
 
-
 namespace HandyControlDemo.UserControl;
 
 /// <summary>

src/Shared/HandyControlDemo_Shared/ViewModel/Controls/NotifyIconDemoViewModel.cs

-using System;
-using GalaSoft.MvvmLight;
+using GalaSoft.MvvmLight;
 using GalaSoft.MvvmLight.Command;
 using HandyControl.Controls;
 using HandyControl.Data;

src/Shared/HandyControl_Shared/Controls/Other/Divider.cs

-using System.ComponentModel;
-using System.Windows;
+using System.Windows;
 using System.Windows.Controls;
 using System.Windows.Markup;
 using System.Windows.Media;

src/Shared/HandyControl_Shared/Tools/Generator/ComparerGenerator.cs

 using System;
 using System.Collections.Generic;
-using HandyControl.Collections;
 using HandyControl.Data;
 
 namespace HandyControl.Tools;