Removes lots of Dead Code - thanks NDepend!

src/Umbraco.Core/ControlExtensions.cs

@@ -1,46 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Web.UI;
-
-namespace Umbraco.Core
-{
-    internal static class ControlExtensions
-    {
-        /// <summary>
-        /// Recursively finds a control with the specified identifier.
-        /// </summary>
-        /// <typeparam name="T">
-        /// The type of control to be found.
-        /// </typeparam>
-        /// <param name="parent">
-        /// The parent control from which the search will start.
-        /// </param>
-        /// <param name="id">
-        /// The identifier of the control to be found.
-        /// </param>
-        /// <returns>
-        /// The control with the specified identifier, otherwise <see langword="null"/> if the control 
-        /// is not found.
-        /// </returns>
-        public static T FindControlRecursive<T>(this Control parent, string id) where T : Control
-        {
-            if ((parent is T) && (parent.ID == id))
-            {
-                return (T)parent;
-            }
-
-            foreach (Control control in parent.Controls)
-            {
-                var foundControl = FindControlRecursive<T>(control, id);
-                if (foundControl != null)
-                {
-                    return foundControl;
-                }
-            }
-            return default(T);
-        }
-
-    }
-}