It has been a difficult week for Google’s Nest smart home division, with anger over its decision to stop supporting the Revolv home hub, reports of unimpressive revenues from Nest’s connected devices, and tales of rows between executives. Google acquired Revolv two years ago and it has been living under the Alphabet holding firm along with other IoT-related activities such as Nest. However, it has discontinued the connected hub and now says it will withdraw support and cloud services from May 15. “The Revolv app won’t open and the hub won’t work,” said the firm, which said all data would be deleted. When Revolv was acquired, it said it would stop working on its own hubs and that its efforts…