Local images cache

How to expire local images cache instantly?
Own private repository is cached and conflicts with lxd local simplestreams cache (shows hash mismatch).

On plain installation, just emptied this:
> /var/cache/lxd/simplestreams.yaml

But now as snap, cache files are in sub folders of:

5e0b6223c5122949d15b092365fc8b488f8a081a65e167b05f453c79a8790e73 64bfbd0d406818492958140cedfac3be5f9cce7fd130ca14fa2cd586a2b6842e

Somehow cant delete them in bash with:
sudo rm -r /var/snap/lxd/common/lxd/cache/*