csharp: hide eldbus_service api.

Summary: ref T8361

Reviewers: lauromoura, felipealmeida, segfaultxavi, woohyun

Reviewed By: lauromoura

Subscribers: cedric, #reviewers, #committers

Tags: #efl

Maniphest Tasks: T8361

Differential Revision: https://phab.enlightenment.org/D10425

src/bindings/mono/eldbus_mono/eldbus_service.cs

@@ -2,12 +2,14 @@
 
 using System;
 using System.Runtime.InteropServices;
+using System.ComponentModel;
 
 using static eldbus.EldbusServiceNativeFunctions;
 
 namespace eldbus
 {
 
+[EditorBrowsable(EditorBrowsableState.Never)]
 public static class EldbusServiceNativeFunctions
 {
     [DllImport(efl.Libs.Eldbus)] public static extern IntPtr