MapClear.cs
using Sandbox;
using System.Linq;

public sealed class MapCleaner : Component
{
    [Property] public string ObjectToDelete { get; set; } = "SoundObjectName";
    
    private bool _isDeleted = false;

    protected override void OnUpdate()
    {
        // If we already deleted it, stop checking to save performance
        if ( _isDeleted ) return;

        // Search for the object
        var targetObj = Scene.GetAllObjects(true).FirstOrDefault(x => x.Name == ObjectToDelete);
        
        // If it finally spawned in, destroy it
        if ( targetObj != null )
        {
            targetObj.Destroy();
            _isDeleted = true;
        }
    }
}