WordPress.org

Warranty

The plugin does not delete any options without a user clicking on delete and confirming the deletion. If you blow up your WordPress installation: Sorry, not my fault, no warranty for this plugin.

I have to repeat it again: Only delete options if you really know what you are doing! If there is any maybe do not delete or that option and maybe your WordPress ist lost in space.

Hint: Backup your database then delete then test and restore the backup if something goes wrong.