Kenika on "[Plugin: Relevanssi - A Better Search] Relevanssi uses 16.5 of my 100 MB MySQL – but I don’t have it installed!?"

Hi!

I made a – for me – pretty strange discovery:
Relevanssi ("blog_1_relevanssi") takes 16.5 of my 100 MB MySQL. I do not use Relevanssi, but I’m quite sure I did once. Or is Relevanssi integrated in some plugin package? It’s not a deactived plugin. I even don’t have the plugin installed on my webspace!
So where does this entry in my MySQL come from? Can I delete it without breaking anything.
I have to admit that I have absolutely no clue about MySQL and will appreciate help.

Thanks!

https://wordpress.org/plugins/relevanssi/