code_style: remove unused namespace using

.editorconfig

@@ -206,6 +206,9 @@ dotnet_diagnostic.CA1854.severity = warning
 #CA2211:Non-constant fields should not be visible
 dotnet_diagnostic.CA2211.severity = error
 
+# IDE0005: remove used namespace using
+dotnet_diagnostic.IDE0005.severity = error
+
 # Wrapping preferences
 csharp_wrap_before_ternary_opsigns = false
 

src/Commands/QueryLocalChanges.cs

@@ -1,5 +1,4 @@
-using System;
-using System.Collections.Generic;
+using System.Collections.Generic;
 using System.Text.RegularExpressions;
 
 namespace SourceGit.Commands

src/ViewModels/RepositoryConfigure.cs

@@ -1,5 +1,4 @@
-using System;
-using System.Collections.Generic;
+using System.Collections.Generic;
 using Avalonia.Collections;
 using CommunityToolkit.Mvvm.ComponentModel;