tests/vm: add non-test Go file
tests/vm: add non-test Go file

This removes the annoying warning printed by "go install ./...".

maran/go-ethereum,maran/go-ethereum,maran/go-ethereum,maran/go-ethereum,maran/go-ethereum,maran/go-ethereum,maran/go-ethereum,maran/go-ethereum,maran/go-ethereum