Minor comp message removal (#6733)

Content.Server/Climbing/Components/ClimbingComponent.cs

@@ -53,22 +53,6 @@ namespace Content.Server.Climbing.Components
             }
         }
 
-        [Obsolete("Component Messages are deprecated, use Entity Events instead.")]
-        public override void HandleMessage(ComponentMessage message, IComponent? component)
-        {
-#pragma warning disable 618
-            base.HandleMessage(message, component);
-#pragma warning restore 618
-            switch (message)
-            {
-                case BuckleMessage msg:
-                    if (msg.Buckled)
-                        IsClimbing = false;
-
-                    break;
-            }
-        }
-
         /// <summary>
         /// Make the owner climb from one point to another
         /// </summary>