Issue with repeated ip content removals

I’m unsure if this is the right category for this, but I decided this was the most fitting for my issue. Over the past week I have gotten multiple IP removal strikes on my account for shirts that I uploaded to a group all the way back in March of 2018. I am no longer apart of this group, and I cannot seem to delete or take them offsale, and I am afraid that my account will randomly get terminated out of nowhere. Is there anything I can do about this? Or is there some way I can delete these shirts that I’m missing? Or should I just not worry about this at all?