feat(Linux): Address Rule CA1823

src/Avalonia.X11/X11Clipboard.cs

@@ -18,8 +18,6 @@ namespace Avalonia.X11
         private TaskCompletionSource<object> _requestedDataTcs;
         private readonly IntPtr[] _textAtoms;
         private readonly IntPtr _avaloniaSaveTargetsAtom;
-        private readonly Dictionary<string, IntPtr> _formatAtoms = new Dictionary<string, IntPtr>();
-        private readonly Dictionary<IntPtr, string> _atomFormats = new Dictionary<IntPtr, string>();
 
         public X11Clipboard(AvaloniaX11Platform platform)
         {

src/Linux/Avalonia.LinuxFramebuffer/Input/EvDev/EvDevBackend.cs

@@ -3,7 +3,6 @@ using System.Collections.Generic;
 using System.Threading;
 using Avalonia.Input;
 using Avalonia.Input.Raw;
-using Avalonia.Threading;
 using static Avalonia.LinuxFramebuffer.NativeUnsafeMethods;
 
 namespace Avalonia.LinuxFramebuffer.Input.EvDev
@@ -13,7 +12,6 @@ namespace Avalonia.LinuxFramebuffer.Input.EvDev
         private readonly EvDevDeviceDescription[] _deviceDescriptions;
         private readonly List<EvDevDeviceHandler> _handlers = new List<EvDevDeviceHandler>();
         private int _epoll;
-        private object _lock = new object();
         private Action<RawInputEventArgs> _onInput;
         private IInputRoot _inputRoot;
         private RawEventGroupingThreadingHelper _inputQueue;

src/Linux/Avalonia.LinuxFramebuffer/Input/LibInput/LibInputBackend.cs

@@ -11,7 +11,6 @@ namespace Avalonia.LinuxFramebuffer.Input.LibInput
     {
         private IScreenInfoProvider _screen;
         private IInputRoot _inputRoot;
-        private readonly Queue<Action> _inputThreadActions = new Queue<Action>();
         private TouchDevice _touch = new TouchDevice();
         private const string LibInput = nameof(Avalonia.LinuxFramebuffer) + "/" + nameof(Avalonia.LinuxFramebuffer.Input) + "/" + nameof(LibInput);
         private readonly RawEventGroupingThreadingHelper _inputQueue;