Revert "plutonium core steal objective" (#29578)

Revert "plutonium core steal objective (#26786)"

This reverts commit f6ce07289a.

Content.Server/Objectives/Components/StoreUnlockerComponent.cs

@@ -1,14 +0,0 @@
-using Content.Shared.Store;
-using Robust.Shared.Prototypes;
-
-namespace Content.Server.Objectives.Components;
-
-/// <summary>
-/// Unlocks store listings that use <see cref="ObjectiveUnlockCondition"/>.
-/// </summary>
-[RegisterComponent]
-public sealed partial class StoreUnlockerComponent : Component
-{
-    [DataField(required: true)]
-    public List<ProtoId<ListingPrototype>> Listings = new();
-}