docs: remove duplicate

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

src/PepperDash.Essentials.Core/Routing/RoutingInputPort.cs

@@ -45,9 +45,6 @@ namespace PepperDash.Essentials.Core
         /// Returns a string representation of the input port.
         /// </summary>
         /// <returns>A string in the format "ParentDeviceKey|PortKey|SignalType|ConnectionType".</returns>
-        /// <summary>
-        /// ToString method
-        /// </summary>
         /// <inheritdoc />
         public override string ToString()
         {