COVID-19 testing booths were removed from some Beijing streets, and travel restrictions in the southern city of Shenzhen were lifted Saturday as China continued to loosen its draconian virus protocols. Despite rising infection rates, cities are relaxing strict COVID rules over quarantine amid mounting public frustration and protests that have gripped the country in the last few weeks. Testing booths in the capital, Beijing, were shuttered as grocery stores lifted mandates to show negative test results to enter. Subways are expected to follow suit on Monday, although offices are still requiring employees to show negative tests to enter. Three years…