While importing images from my iPhone using Image Capture on my mac, I discovered that almost all pictures had corresponding videos. They had the same name, only the file extension was different:

• IMG_2829.JPG
• IMG_2829.MOV

For archiving I don’t to have live photo videos, that’s why I needed a script for that. I found a good start in an answer on SuperUser.stackexchange.com:

• OSX Command line Find Duplicate Filenames with different extensions

I altered it a bit to remove the corresponding .MOV-file (rm):