IListener and IRadio purge (#11980)

Content.Server/Radio/Components/IntrinsicRadioReceiverComponent.cs

@@ -0,0 +1,11 @@
+namespace Content.Server.Radio.Components;
+
+/// <summary>
+///     This component allows an entity to directly translate radio messages into chat messages. Note that this does not
+///     automatically add an <see cref="ActiveRadioComponent"/>, which is required to receive radio messages on specific
+///     channels.
+/// </summary>
+[RegisterComponent]
+public sealed class IntrinsicRadioReceiverComponent : Component
+{
+}