[Revert] Reverts Ninja (#15516)

* Revert "[Antag] add space ninja as midround antag (#14069)"

This reverts commit c1cda0dbf8.

* Revert "[Fix] move ninja objectives into NinjaRole (#15490)"

This reverts commit 251f429fb3.

Content.Server/Ninja/Systems/SpiderChargeSystem.cs

@@ -1,63 +0,0 @@
-using Content.Server.Explosion.EntitySystems;
-using Content.Server.Sticky.Events;
-using Content.Server.Popups;
-using Content.Shared.Interaction;
-using Content.Shared.Ninja.Components;
-using Robust.Shared.GameObjects;
-
-namespace Content.Server.Ninja.Systems;
-
-public sealed class SpiderChargeSystem : EntitySystem
-{
-    [Dependency] private readonly NinjaSystem _ninja = default!;
-    [Dependency] private readonly PopupSystem _popups = default!;
-    [Dependency] private readonly SharedTransformSystem _transform = default!;
-
-    public override void Initialize()
-    {
-        base.Initialize();
-
-        SubscribeLocalEvent<SpiderChargeComponent, BeforeRangedInteractEvent>(BeforePlant);
-        SubscribeLocalEvent<SpiderChargeComponent, EntityStuckEvent>(OnStuck);
-        SubscribeLocalEvent<SpiderChargeComponent, TriggerEvent>(OnExplode);
-    }
-
-    private void BeforePlant(EntityUid uid, SpiderChargeComponent comp, BeforeRangedInteractEvent args)
-    {
-        var user = args.User;
-
-        if (!_ninja.GetNinjaRole(user, out var role))
-        {
-            _popups.PopupEntity(Loc.GetString("spider-charge-not-ninja"), user, user);
-            args.Handled = true;
-            return;
-        }
-
-        // allow planting anywhere if there is no target, which should never happen
-        if (role.SpiderChargeTarget == null)
-            return;
-
-        // assumes warp point still exists
-        var target = Transform(role.SpiderChargeTarget.Value).MapPosition;
-        var coords = args.ClickLocation.ToMap(EntityManager, _transform);
-        if (!coords.InRange(target, comp.Range))
-        {
-            _popups.PopupEntity(Loc.GetString("spider-charge-too-far"), user, user);
-            args.Handled = true;
-        }
-    }
-
-    private void OnStuck(EntityUid uid, SpiderChargeComponent comp, EntityStuckEvent args)
-    {
-        comp.Planter = args.User;
-    }
-
-    private void OnExplode(EntityUid uid, SpiderChargeComponent comp, TriggerEvent args)
-    {
-        if (comp.Planter == null || !_ninja.GetNinjaRole(comp.Planter.Value, out var role))
-            return;
-
-        // assumes the target was destroyed, that the charge wasn't moved somehow
-        role.SpiderChargeDetonated = true;
-    }
-}