Skip importing scores which have no matching realm ruleset
Skip importing scores which have no matching realm ruleset

There's no real way to recover these unless we want to start importing
rulesets into realm. And that seems counter productive. This can only
happen if users don't have the dll present any more, and it was removed
far before realm was tracking rulesets (else it would have an
`Available=0` entry in realm to match).

NeoAdonis/osu,peppy/osu,ppy/osu,NeoAdonis/osu,ppy/osu,ppy/osu,peppy/osu,peppy/osu,NeoAdonis/osu