The cellophane "protector" on the actual camera lens does nothing to disrupt or degrade the quality of the camera, as there is a cut-out for the camera lens; however, the cellophane protector over the flash and heart rate sensor will slightly change image quality when using the flash due to how it will affect the quality of the light the LED flash puts out.
I removed both of those "protectors" right when I got the phone, but it wasn't easy. I had to use a toothpick to get them started, then was able to use tweezers to grab a corner of each and peel them off.