When will our frown turn upside down?Photo: Melissa HomSoho’s 24-hour newcomer, Delicatessen, got us wondering what happened to Bun’s plan to stay open around the clock. They were originally going to go all night starting June 1, but that was delayed till the end of the month when freeloaders ate the place into the ground. Now here we are in mid-July. Owner Tony Lam tells us that he’s still taking care of stiffed customers, and he won’t go 24/7 till August. He better update that “June 24/7” plaque, or at least downgrade it from four stars.