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diff --git a/lisp/loadhist.el b/lisp/loadhist.el
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index 8f29c5a8a71..00000000000
--- a/lisp/loadhist.el
+++ /dev/null
@@ -1,113 +0,0 @@
-;;; loadhist.el --- lisp functions for working with feature groups
-
-;; Author: Eric S. Raymond <esr@snark.thyrsus.com>
-;; Version: 1.0
-;; Keywords: internal
-
-;;; Commentary:
-
-;; These functions exploit the load-history system variable.
-;; Entry points include `unload-feature', `symbol-file', and `feature-file'.
-
-;;; Code:
-
-(defun symbol-file (sym)
-  "Return the input source from which SYM was loaded.
-This is a file name, or nil if the source was a buffer with no associated file."
-  (catch 'foundit
-    (mapcar
-     (function (lambda (x) (if (memq sym (cdr x)) (throw 'foundit (car x)))))
-     load-history)
-    nil))
-
-(defun feature-symbols (feature)
-  "Return the file and list of symbols associated with a given FEATURE."
-   (catch 'foundit
-     (mapcar
-      (function (lambda (x) 
-		  (if (member (cons 'provide feature) (cdr x))
-		      (throw 'foundit x))))
-      load-history)
-     nil))
-
-(defun feature-file (feature)
-  "Return the file name from which a given FEATURE was loaded.
-Actually, return the load argument, if any; this is sometimes the name of a
-Lisp file without an extension.  If the feature came from an eval-buffer on
-a buffer with no associated file, or an eval-region, return nil."
-  (if (not (featurep feature))
-      (error "%s is not a currently loaded feature." (symbol-name feature))
-    (car (feature-symbols feature))))
-
-(defun file-provides (file)
-  "Return the list of features provided by FILE."
-  (let ((symbols (cdr (assoc file load-history))) (provides nil))
-    (mapcar
-     (function (lambda (x)
-		 (if (and (consp x) (eq (car x) 'provide))
-		     (setq provides (cons (cdr x) provides)))))
-     symbols)
-    provides
-    ))
-
-(defun file-requires (file)
-  "Return the list of features required by FILE."
-  (let ((symbols (cdr (assoc file load-history))) (requires nil))
-    (mapcar
-     (function (lambda (x)
-		 (if (and (consp x) (eq (car x) 'require))
-		     (setq requires (cons (cdr x) requires)))))
-     symbols)
-    requires
-    ))
-
-(defun set-intersect (p q)
-  ;; Return the set intersection of two lists
-  (let ((ret nil))
-    (mapcar
-     (function (lambda (x) (if (memq x q) (setq ret (cons x ret)))))
-     p)
-    ret
-    ))
-
-(defun file-dependents (file)
-  ;; Return the list of loaded libraries that depend on FILE.
-  (let ((provides (file-provides file)) (dependents nil))
-    (mapcar
-     (function (lambda (x) 
-		 (if (set-intersect provides (file-requires (car x)))
-		     (setq dependents (cons (car x) dependents)))))
-     load-history)
-    dependents
-    ))
-
-;;;###autoload
-(defun unload-feature (feature &optional force)
-  "Unload the library that provided FEATURE, restoring all its autoloads.
-If the feature is required by any other loaded code, and optional FORCE
-is nil, raise an error."
-  (interactive "SFeature: ")
-  (if (not (featurep feature))
-      (error "%s is not a currently loaded feature." (symbol-name feature)))
-  (if (not force)
-      (let* ((file (feature-file feature)) (dependents (file-dependents file)))
-	(if dependents
-	    (error "Loaded libraries %s depend on %s."
-		   (prin1-to-string dependents) file)
-	    )))
-  (let* ((flist (feature-symbols feature)) (file (car flist)))
-    (mapcar
-     (function (lambda (x) 
-		 (cond ((stringp x) nil)
-		       ((consp x) nil)
-		       ((boundp x) (makunbound x))
-		       ((fboundp x)
-			(fmakunbound x)
-			(let ((aload (get x 'autoload)))
-			  (if aload (fset x aload))))))
-	       )
-     (cdr flist))))
-
-(provide 'loadhist)
-
-;;; loadhist.el ends here