refactoring: removed some unused namespace

src/Avalonia.Base/Rendering/Composition/Animations/CompositionAnimation.cs

@@ -1,12 +1,9 @@
 // ReSharper disable InconsistentNaming
 // ReSharper disable CheckNamespace
 
-using System;
-using System.Collections.Generic;
 using System.Numerics;
 using Avalonia.Rendering.Composition.Expressions;
 using Avalonia.Rendering.Composition.Server;
-using Avalonia.Rendering.Composition.Transport;
 
 // Special license applies <see href="https://raw.githubusercontent.com/AvaloniaUI/Avalonia/master/src/Avalonia.Base/Rendering/Composition/License.md">License.md</see>
 

src/Avalonia.Base/Rendering/SceneGraph/GeometryNode.cs

@@ -1,9 +1,7 @@
 using System;
-using System.Collections.Generic;
 using Avalonia.Media;
 using Avalonia.Media.Immutable;
 using Avalonia.Platform;
-using Avalonia.VisualTree;
 
 namespace Avalonia.Rendering.SceneGraph
 {

src/Avalonia.Base/Rendering/SceneGraph/GlyphRunNode.cs

@@ -1,10 +1,6 @@
 using System;
-using System.Collections.Generic;
-
 using Avalonia.Media;
-using Avalonia.Media.Immutable;
 using Avalonia.Platform;
-using Avalonia.VisualTree;
 
 namespace Avalonia.Rendering.SceneGraph
 {

src/Avalonia.Base/Rendering/SceneGraph/LineNode.cs

@@ -1,9 +1,7 @@
 using System;
-using System.Collections.Generic;
 using Avalonia.Media;
 using Avalonia.Media.Immutable;
 using Avalonia.Platform;
-using Avalonia.VisualTree;
 
 namespace Avalonia.Rendering.SceneGraph
 {

src/Skia/Avalonia.Skia/ImmutableBitmap.cs

@@ -1,11 +1,8 @@
 using System;
 using System.IO;
-using System.Runtime.CompilerServices;
-using System.Security.Cryptography;
 using Avalonia.Media.Imaging;
 using Avalonia.Platform;
 using Avalonia.Skia.Helpers;
-using Avalonia.Media.Imaging;
 using SkiaSharp;
 
 namespace Avalonia.Skia

src/Windows/Avalonia.Direct2D1/Direct2D1Platform.cs

@@ -1,5 +1,4 @@
 using System;
-using System.Collections.Concurrent;
 using System.Collections.Generic;
 using System.IO;
 using Avalonia.Controls;
@@ -9,7 +8,6 @@ using Avalonia.Direct2D1.Media.Imaging;
 using Avalonia.Media;
 using Avalonia.Media.Imaging;
 using Avalonia.Platform;
-using Avalonia.Media.Imaging;
 using SharpDX.DirectWrite;
 using GlyphRun = Avalonia.Media.GlyphRun;
 using TextAlignment = Avalonia.Media.TextAlignment;