Hi there Froodman,
We understand wanting to remove the photos locally from your MacBook. We can help look into this with you.
You have the option of turning off iCloud Photos on your MacBook. This would prevent the photos from being shared on your computer but allow you to still have them on your other device.
Check out this article on iCloud photos: Get help with iCloud Photos
Specifically, you can do this on your MacBook. Go to System Preferences > iCloud. Next to Photos, click Options, then deselect iCloud Photos. You may want to make a backup of your photos, just in case.
If you run into any issue with this, please let us know and we'll help explore further.
All the best.