Add a method to remove the registry key

src/Squirrel/IUpdateManager.cs

@@ -66,6 +66,12 @@ namespace Squirrel
         /// <param name="quietSwitch">The switch for silent uninstall, usually --silent</param>
         /// <returns>The registry key that was created</returns>
         Task<RegistryKey> CreateUninstallerRegistryEntry(string uninstallCmd, string quietSwitch);
+
+        /// <summary>
+        /// Removes the entry in Programs and Features created via 
+        /// CreateUninstallerRegistryEntry
+        /// </summary>
+        void RemoveUninstallerRegistryEntry();
     }
 
     public static class EasyModeMixin

src/Squirrel/UpdateManager.cs

@@ -145,6 +145,13 @@ namespace Squirrel
             return key;
         }
 
+        public void RemoveUninstallerRegistryEntry()
+        {
+            var key = RegistryKey.OpenBaseKey(RegistryHive.CurrentUser, RegistryView.Default)
+                .OpenSubKey(uninstallRegSubKey);
+            key.DeleteSubKeyTree(applicationName);
+        }
+
         public void Dispose()
         {
             var disp = Interlocked.Exchange(ref updateLock, null);