Continuing to run Photoshop without a license is illegal. You seem to want to do the right thing, so you should remove it.
Then ask yourself... How are you getting substantial illegal software installed on your computer without knowing how you got it?
Oh, and by the way, illegally cracked copies of Photoshop often come with a malware payload. You may already be infected by it. I'd scan my system with a good anti-malware package if I were you.
-Noel