Marked Unity Joystick Manager as supported on XR SDK pipeline (#9954)

Author: RogPodge

Assets/MRTK/Core/Providers/UnityInput/UnityJoystickManager.cs

@@ -17,8 +17,7 @@ namespace Microsoft.MixedReality.Toolkit.Input.UnityInput
     [MixedRealityDataProvider(
         typeof(IMixedRealityInputSystem),
         (SupportedPlatforms)(-1),  // All platforms supported by Unity
-        "Unity Joystick Manager",
-        supportedUnityXRPipelines: SupportedUnityXRPipelines.LegacyXR)]
+        "Unity Joystick Manager")]
 #if UNITY_2020_1_OR_NEWER
     [Obsolete("The legacy XR pipeline has been removed in Unity 2020 or newer. Please migrate to XR SDK.")]
 #endif // UNITY_2020_1_OR_NEWER