remove created at for now

LightlessSyncAPI/Data/GroupData.cs

@@ -6,8 +6,5 @@ namespace LightlessSync.API.Data;
 public record GroupData(string GID, string? Alias = null, DateTime? CreatedAt = null)
 {
     [IgnoreMember]
-    public string AliasOrGID => string.IsNullOrWhiteSpace(Alias) ? GID : Alias;
-    [IgnoreMember]
-    public DateTime? CreatedAt { get; set; } = CreatedAt;
-
+    public string AliasOrGID => Alias ?? GID;
 }