feat: don't hide information from own system when directly requested

in lists, pk;m <ref> <prop>, etc

PluralKit.Bot/Errors.cs

@@ -90,8 +90,6 @@ public static class Errors
         new("Cannot get the front percent between now and a time in the future.");
 
     public static PKError LookupNotAllowed => new("You do not have permission to access this information.");
-    public static PKError LookupHidden =>
-        new("This information is private and you have chosen to hide private information by default. Add the `-private` flag to this command to show it.");
 
     public static PKError StringTooLongError(string name, int length, int maxLength) =>
         new($"{name} too long ({length}/{maxLength} characters).");