I.R.I.S. Cardiris 4 - Manual (Page 15)

Cardiris TM 4 – User Guide
7
Cardiris will be removed from your machine.
Note: the Cardiris preferences are not removed by dragging the
Cardiris folder to the trash can, in case you should want to re-install
the software later on. To remove the preferences, drag the folder
Cardiris Prefs to the trash. You will find this folder in Users - xxx
(your user name) - Library - Preferences.