mainMenu.cs:
void Awake()
    {
        if (SystemInfo.graphicsDeviceType == UnityEngine.Rendering.GraphicsDeviceType.Direct3D11 || SystemInfo.graphicsDeviceType == UnityEngine.Rendering.GraphicsDeviceType.Direct3D12)
        {
            gameController.dx11 = true;
        }
}


using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class DirectXHider : MonoBehaviour {

    // Use this for initialization
    private void Awake()
    {
        if(!gameController.dx11)
        {
            gameObject.SetActive(false);
        }
    }

}