Remove unlicenced plug ins

I mistakenly downloaded some Elements Proffessional VSTs like Retrologue, not realising that my Elements licence does not allow me to use them (Yeah I know!). Now they appear as options in my VST view but then I obviously get blocked by the licence. How can I revert my copy of Cubase Elements 13 to not include these options which I cannot use? I hope this makes sense and thanks in advance?

I would use the Steinberg Library Manager.
Locate the Retrologue stuff I don’t want and click remove

Hi Fantom,

Thanks for this. I have tried what you recommend but the files are still there:

Many thanks