Remove misc Startup/Shutdown overrides (#8113)

Co-authored-by: ike709 <ike709@github.com>

Content.Server/Ghost/Roles/Components/GhostRoleComponent.cs

@@ -7,6 +7,7 @@ using Robust.Shared.Localization;
 
 namespace Content.Server.Ghost.Roles.Components
 {
+    [Friend(typeof(GhostRoleSystem))]
     public abstract class GhostRoleComponent : Component
     {
         [DataField("name")] public string _roleName = "Unknown";
@@ -69,21 +70,6 @@ namespace Content.Server.Ghost.Roles.Components
         [DataField("reregister")]
         public bool ReregisterOnGhost { get; set; } = true;
 
-        protected override void Initialize()
-        {
-            base.Initialize();
-            if (_roleRules == "")
-                _roleRules = Loc.GetString("ghost-role-component-default-rules");
-            EntitySystem.Get<GhostRoleSystem>().RegisterGhostRole(this);
-        }
-
-        protected override void Shutdown()
-        {
-            base.Shutdown();
-
-            EntitySystem.Get<GhostRoleSystem>().UnregisterGhostRole(this);
-        }
-
         public abstract bool Take(IPlayerSession session);
     }
 }