Unnecessary 'requires' in generated cache

[simon-brooke]

When generating cache.clj files, we generate a require list. Most of these requires appear to be unnecessary. The following commenting makes no difference to build in YouYesYet:

(ns
 youyesyet.cache
 "Caching wrappers for queries for youyesyet auto-generated by [Application Description Language framework](https://github.com/simon-brooke/adl) at 20220617T112222.113Z"
 (:require
  ;; [adl-support.core :refer :all]
  ;; [adl-support.rest-support :refer :all]
  [clojure.core.memoize :as memo]
  ;; [clojure.java.io :as io]
  ;; [clojure.tools.logging :as log]
  ;; [compojure.core :refer [defroutes GET POST]]
  ;; [hugsql.core :as hugsql]
  ;; [noir.response :as nresponse]
  ;; [noir.util.route :as route]
  ;; [ring.util.http-response :as response]
  [youyesyet.db.core :as db]))

I think (but need to check) that none of these requires are ever actually used. In which case they should not be generated.