By Richard Horgan Los Angeles (Knewz) — Never mind that Texas already has three NBA teams and two NFL squads. According to a new poll by website BetUS, Austin, Texas, is the top-deserving city in the U.S. among those that don’t already have a major sports franchise. The poll obviously does not rate MLS in the “major” category, as Austin is preparing for a second season of its new team Austin FC. Austin received 22 percent of the votes for an NFL franchise and 17 percent for an NBA team. Also in the top three, in both cases, was Louisville, Kentucky, registering 17 percent support for an NFL te…