My best answer at this point would be that you need to make your own program to find and remove by content. Because no other manual pdf editor would reasonably have such a feature since it’s so niche.

Also vibe coding with AI tends to be very good for singular tasks like this.

I wouldn’t recommend converting the pdf to anything else since that would remove the layer info unless it’s to more complicated formats like EPS, illustrator, etc.

To properly do this the phone has to support it at hardware level. Pixel and iPhone have this feature but don’t know about yours. There are apps like battery guru which will alert you, but you have to manually unplug at that point.