Remove jitting of purge_duplicates() (#1027)
Remove jitting of purge_duplicates() (#1027)

* Fixed bug in extracting prior samples for cmdstanpy.

* Removed jitting of purge_duplicates()

* Updated purge_duplicates to use much speedier algorithm

* Fixed argument naming in purge_duplicates()

* fix lynt

Co-authored-by: Osvaldo Martin <7bdfdb6c58e7de785941ed25d34779031d57b1dc@gmail.com>

arviz-devs/arviz,arviz-devs/arviz,arviz-devs/arviz,arviz-devs/arviz