Hot revert (#403)

* Revert "add: notification upon head arrival (#402)"

This reverts commit a87b5295bc.

* Revert "Constr. graph 2 recipes fix (#401)"

This reverts commit 5832144695.

Content.Shared/_White/Announcement/ArrivalNotificationPrototype.cs

@@ -1,33 +0,0 @@
-using Robust.Shared.Prototypes;
-
-namespace Content.Shared._White.Announcement;
-
-[Prototype("arrivalNotification")]
-public sealed partial class ArrivalNotificationPrototype : IPrototype
-{
-    [IdDataField] public string ID { get; } = default!;
-
-    /// <summary>
-    ///     The message that the department will receive upon the player arrival
-    /// </summary>
-    [DataField(required: true)]
-    public string Message = default!;
-
-    /// <summary>
-    ///     The message that the station will receive upon the player arrival
-    /// </summary>
-    [DataField]
-    public string GlobalMessage = default!;
-
-    /// <summary>
-    ///     ID of the channel where the player arrival will be announced.
-    /// </summary>
-    [DataField(required: true)]
-    public HashSet<string> RadioChannelsPrototypes = default!;
-
-    /// <summary>
-    ///     Determines whether the notification will be made to the entire station. If false, the notification will be on the department radio channel
-    /// </summary>
-    [DataField]
-    public bool UseGlobalAnnouncement;
-}