Remove redundant requires of 'help'

* lisp/emacs-lisp/advice.el (ad-read-advised-function):
* lisp/emacs-lisp/ert.el:
* lisp/facemenu.el: Don't require 'help'; it is preloaded since
version 18.59.

lisp/emacs-lisp/advice.el

@@ -1840,8 +1840,7 @@ function at point for which PREDICATE returns non-nil)."
 	(or default
 	    ;; Prefer func name at point, if it's an advised function etc.
 	    (let ((function (progn
-			      (require 'help)
-			      (function-called-at-point))))
+                              (function-called-at-point))))
 	      (and function
 		   (member (symbol-name function) ad-advised-functions)
 		   (or (null predicate)

lisp/emacs-lisp/ert.el

@@ -63,7 +63,6 @@
 (require 'easymenu)
 (require 'ewoc)
 (require 'find-func)
-(require 'help)
 (require 'pp)
 
 ;;; UI customization options.

lisp/facemenu.el

@@ -85,9 +85,6 @@
 
 ;;; Code:
 
-(eval-when-compile
-  (require 'help))
-
 ;; Global bindings:
 (define-key global-map [C-down-mouse-2] 'facemenu-menu)
 (define-key global-map "\M-o" 'facemenu-keymap)