By Matthew Lesh Landlords are an easy target for our housing grievances, but fewer of them won’t help renters, writes Matthew Lesh There have been reports recently about the buy-to-let bubble bursting. The sector is under pressure from higher interest rates, unfavourable tax changes and regulatory costs imposed by new rental rules and energy efficiency requirements. There has already been a decline in buy-to-let house prices and fewer properties going to landlords. Last year just 11.2 per cent of properties were sold to landlords, down from 15.7 per cent in 2015, according to real estate agenc…