FIX: ISXB-927 Removed platform-specific feature flags relating to Windows Gaming Input since obsolete (#1955)

* FIX: ISXB-927 Removed platform-specific feature flags relating to Windows Gaming Input since obsolete (#1955)

Author: ekcoh

Packages/com.unity.inputsystem/CHANGELOG.md

@@ -12,6 +12,7 @@ however, it has to be formatted properly to pass verification tests.
 
 ### Change
 - Added warning messages to both `OnScreenStick` and `OnScreenButton` Inspector editors that would display a warning message in case on-screen control components are added to a `GameObject` not part of a valid UI hierarchy.
+- Changed behavior for internal feature flag relating to Windows Gaming Input to be ignored on non-supported platforms.
 
 ### Fixed
 - Avoid potential crashes from `NullReferenceException` in `FireStateChangeNotifications`.

Packages/com.unity.inputsystem/InputSystem/Devices/Commands/UseWindowsGamingInputCommand.cs

@@ -4,7 +4,6 @@ internal static class InputFeatureNames
     {
         public const string kRunPlayerUpdatesInEditMode = "RUN_PLAYER_UPDATES_IN_EDIT_MODE";
         public const string kDisableUnityRemoteSupport = "DISABLE_UNITY_REMOTE_SUPPORT";
-        public const string kUseWindowsGamingInputBackend = "USE_WINDOWS_GAMING_INPUT_BACKEND";
         public const string kUseOptimizedControls = "USE_OPTIMIZED_CONTROLS";
         public const string kUseReadValueCaching = "USE_READ_VALUE_CACHING";
         public const string kParanoidReadValueCachingChecks = "PARANOID_READ_VALUE_CACHING_CHECKS";

Packages/com.unity.inputsystem/InputSystem/Devices/Commands/UseWindowsGamingInputCommand.cs.meta

@@ -2644,13 +2644,6 @@ internal void ApplySettings()
                 #if UNITY_EDITOR
                 runPlayerUpdatesInEditMode = m_Settings.IsFeatureEnabled(InputFeatureNames.kRunPlayerUpdatesInEditMode);
                 #endif
-
-                if (m_Settings.IsFeatureEnabled(InputFeatureNames.kUseWindowsGamingInputBackend))
-                {
-                    var command = UseWindowsGamingInputCommand.Create(true);
-                    if (ExecuteGlobalCommand(ref command) < 0)
-                        Debug.LogError($"Could not enable Windows.Gaming.Input");
-                }
             }
 
             // Cache some values.