Heal the layer break around the Id<> type

src/sql/util.ts

@@ -1,14 +0,0 @@
-import { randomBytes } from "crypto";
-
-export function generateId(): bigint {
-  const buf = randomBytes(8);
-
-  buf[0] &= 0x7f; // Force number to be non-negative
-
-  // Let's not depend on Node v12 for the sake of 3 LoC just yet.
-
-  const hi = buf.readUInt32BE(0);
-  const lo = buf.readUInt32BE(4);
-
-  return (BigInt(hi) << 32n) | BigInt(lo);
-}