Remove magremove magic nix cache

Commit cb12df5d48 pushed by jahansonmain
Workflow build.yml

nix-build (native-aarch64, varda)

Failure

Set up job0s
Checkout repository1s
https://github.com/cachix/cachix-action@v141s
Garbage collect build dependencies0s
Build new ${{ matrix.system }} system0s
Complete job0s