sysutils/ipfs-go: Switch to upstream-provided source tarball

Since v0.4.17, go-ipfs started to provide full source tarball [1]
which includes all dependencies required for build. Switch port
to use it instead of LOCAL/yuri/ipfs-go-gx-*.tar.xz

[1] https://github.com/ipfs/go-ipfs/releases/download/v0.4.17/go-ipfs-source.tar.gz

PR: 231107
Submitted by: Dmitri Goutnik <dg@syrec.org>
Approved by: jhixson (maintainer's timeout; 19 days)