Revert "metrics.sr.ht: fix check function"

This reverts commit d07f7dbd5f418138656097de2f5e36f7a54d9c5b.

metrics.sr.ht: fix check function

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metrics.sr.ht: add post-upgrade

metrics.sr.ht: use $_pkgname for tarball

metrics.sr.ht-rules: new aport