Remove useless LIMIT_OPTION_DEFAULT value from LimitOption
During the development that led to commit
357889eb17bb, for a time we
had the value LIMIT_OPTION_DEFAULT, which was mostly but not completely
removed later on, before commit. Complete the removal now.
Author: Zhang Mingli <avamingli@gmail.com>
Discussion: https://postgr.es/m/
59d61a1a-3858-475a-964f-
24468c97cc67@Spark