Earlier in the week, unconfirmed reports of a knife-wielding assailant had Williamsburg residents on edge; South Williamsburg in particular has been flooded with patrolmen all week, and we’ve heard from readers who say they’ve been written summons for minor offenses like jaywalking. Though the 90th Precinct and the NYPD press liaison are unforthcoming about the dragnet, two officers walking their beat by the future Pies ‘n’ Thighs location on Driggs and South 4th Street told......