One of the hardest lessons I had to learn as a photographer and videographer, is to toss away images and footage that won't be used.
A photograph is not just a photograph for the person who pressed the shutter, it comes with feelings attached. It might have been a costly photograph to take, and a lot of time might have been invested in the process.
There's no reason to keep those images or videos around if they didn't turn out the way we wanted and they won't be used for any project.
Upload them to a service like Google Photos if you like, but they should be let go from your working catalog.