by Ken Task.
See Leon's post:
https://moodle.org/mod/forum/discuss.php?d=448319#p1836390
All of those should not be in the DB and their directories in moodle code should not be there as well.
In your Webmin, MySQL tool, use the DB for the moodle and edit mdl_config_plugins table.
You will be able to recognize which rows to delete.
After you delete the rows, access the moodle GUI again.
or
Re-read this post
https://moodle.org/mod/forum/discuss.php?d=448319#p1836610
'SoS', Ken