Shrink dependency chains in core libraries

core/autoload/cache.el

@@ -12,8 +12,6 @@
 ;; Like persistent-soft, caches assume a 2-tier structure, where all caches are
 ;; namespaced by location.
 
-(require 'persistent-soft)
-
 (defvar doom-cache-alists ()
   "An alist of alists, containing lists of variables for the doom cache library
 to persist across Emacs sessions.")

core/autoload/help.el

@@ -75,6 +75,7 @@ in, or d) the module associated with the current major mode (see
                                "init.el")
                       (thing-at-point 'sexp t)))
                 ((save-excursion
+                   (require 'smartparens)
                    (ignore-errors
                      (sp-beginning-of-sexp)
                      (unless (eq (char-after) ?\()

core/autoload/packages.el

@@ -1,10 +1,6 @@
 ;;; core/autoload/packages.el -*- lexical-binding: t; -*-
 
 (load! cache)
-(require 'use-package)
-(require 'quelpa)
-(require 'package)
-(require 'async)
 
 ;;; Private functions
 (defsubst doom--sort-alpha (it other)