refactor: remove unused method

Author: darrachequesne

lib/util.ts

@@ -1,5 +1,3 @@
-import { randomBytes } from "crypto";
-
 export function hasBinary(obj: any, toJSON?: boolean): boolean {
   if (!obj || typeof obj !== "object") {
     return false;
@@ -31,10 +29,6 @@ export function hasBinary(obj: any, toJSON?: boolean): boolean {
   return false;
 }
 
-export function randomId() {
-  return randomBytes(8).toString("hex");
-}
-
 /**
  * Whether the client comes from the `redis` package
  *