Fix edgespreaderprototype linter (#15265)

Content.Server/Spreader/EdgeSpreaderPrototype.cs

@@ -1,12 +0,0 @@
-using Robust.Shared.Prototypes;
-
-namespace Content.Server.Spreader;
-
-/// <summary>
-/// Adds this node group to <see cref="SpreaderSystem"/> for tick updates.
-/// </summary>
-[Prototype("edgeSpreader")]
-public sealed class EdgeSpreaderPrototype : IPrototype
-{
-    [IdDataField] public string ID { get; } = string.Empty;
-}

Content.Server/Spreader/KudzuSystem.cs

@@ -1,4 +1,4 @@
-using Content.Shared.Kudzu;
+using Content.Shared.Spreader;
 using Robust.Shared.Random;
 using Robust.Shared.Timing;
 

Content.Server/Spreader/SpreaderSystem.cs

@@ -3,6 +3,7 @@ using Content.Server.Atmos.EntitySystems;
 using Content.Server.NodeContainer;
 using Content.Server.NodeContainer.NodeGroups;
 using Content.Shared.Atmos;
+using Content.Shared.Spreader;
 using Robust.Shared.Collections;
 using Robust.Shared.Map;
 using Robust.Shared.Map.Components;