Starry, the ISP that delivers internet to your home using wireless antennas instead of cables, is laying off around half its workforce, or just over 500 people, according to a statement from the company and a report in The Boston Globe. The company is also telling investors that they can no longer count on the expectations it set for this year — information that probably doesn’t come as a surprise after its earnings report this summer revealed that it had around $100 million in cash and…