GLOVERSVILLE — April 1 stands out to Gloversville Mayor Vincent DeSantis. That's when he'll learn how many tax-delinquent properties Gloversville can potentially acquire from Fulton County and, if all goes according to plan, eventually sell off to buyers vetted by the city's novel property disposition committee.  Local lawmakers last fall earmarked $300,000 in federal COVID-19 relief dollars for purchasing tax-foreclosed holdings — nearly double the amount used for purchases during the anti-blight initiative's pilot phase two years ago.  "I hope it's not going to be too large, but it'll be a big lift," DeSantis said. "But we do have the…