Deletion of Sulo Kolkka (2nd nomination)

Comment: this article about an evidently important subject, which, however, is not Wikinotable. As the article's text itself states: The subject's name "is not mentioned in Finnish Defence Forces archives, newspapers or magazines of the era. His name is hard to find even in post-war fictional war literature, and there exist no photographs of him. When compared to legendary real-life sniper Häyhä...it is reasonable to presume that there was no sniper named Sulo Kolkka." That's pretty much conclusive, as far as sourcing is concerned. If |reliable sources are unearthed about this person/persona, we might want to reconsider
Stance: delete
Cited policy: Wikipedia:Reliable sources (WP:RS)