Rename Flush to Clear and remove unnecessary attribute

src/Ryujinx.Gtk3/Input/GTK3/GTK3KeyboardDriver.cs

@@ -81,7 +81,7 @@ namespace Ryujinx.Input.GTK3
             return _pressedKeys.Contains(nativeKey);
         }
 
-        public void Flush()
+        public void Clear()
         {
             _pressedKeys.Clear();
         }

src/Ryujinx.Input/HLE/NpadManager.cs

@@ -176,7 +176,7 @@ namespace Ryujinx.Input.HLE
             {
                 foreach (InputConfig inputConfig in _inputConfig)
                 {
-                    _controllers[(int)inputConfig.PlayerIndex].GamepadDriver.Flush();
+                    _controllers[(int)inputConfig.PlayerIndex].GamepadDriver.Clear();
                 }
 
                 _blockInputUpdates = false;

src/Ryujinx.Input/IGamepadDriver.cs

@@ -1,5 +1,4 @@
 using System;
-using System.Runtime.CompilerServices;
 
 namespace Ryujinx.Input
 {
@@ -39,7 +38,6 @@ namespace Ryujinx.Input
         /// Flush the internal state of the driver.
         /// </summary>
         /// <remarks>Does nothing by default.</remarks>
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        void Flush() { }
+        void Clear() { }
     }
 }

src/Ryujinx/Input/AvaloniaKeyboard.cs

@@ -195,7 +195,7 @@ namespace Ryujinx.Ava.Input
 
         public void Clear()
         {
-            _driver?.Flush();
+            _driver?.Clear();
         }
 
         public void Dispose() { }

src/Ryujinx/Input/AvaloniaKeyboardDriver.cs

@@ -94,7 +94,7 @@ namespace Ryujinx.Ava.Input
             return _pressedKeys.Contains(nativeKey);
         }
 
-        public void Flush()
+        public void Clear()
         {
             _pressedKeys.Clear();
         }