The debut feature written and directed by Sandhya Suri, “Santosh,” is a workaday venture that nags at the memory like a burr in one’s sock. If that doesn’t sound like a commendation, consider the deluge of entertainment to which we subject ourselves on a regular basis and how little of it makes a dent. Ms. Suri seems to be bringing us more of the same with this police procedural: Don’t we have enough of the damned things? Given the quality of Ms. Suri’s film, I would say not.