Remove vestigial benchmark code

core/benchmark.el

@@ -1,44 +0,0 @@
-(defvar require-times nil
-  "A list of (FEATURE . LOAD-DURATION).
-LOAD-DURATION is the time taken in milliseconds to load FEATURE.")
-
-(defadvice require
-  (around build-require-times (feature &optional filename noerror) activate)
-  "Note in `require-times' the time taken to require each feature."
-  (let* ((already-loaded (memq feature features))
-         (require-start-time (and (not already-loaded) (current-time))))
-    (prog1
-        ad-do-it
-      (when (and (not already-loaded) (memq feature features))
-        (add-to-list 'require-times
-                     (cons feature
-                           (float-time (time-subtract (current-time) require-start-time)))
-                     t)))))
-
-(defun list-times ()
-  (interactive)
-  (let ((temp-buffer (get-buffer-create "*benchmark*"))
-        (sum 0.0))
-    (popwin:popup-buffer temp-buffer :stick t)
-    (erase-buffer)
-    (org-mode)
-    (dolist (feature require-times)
-      (if (eq feature 'null)
-          (progn
-            (insert "|----+----+----|\n")
-            (insert (format "| %6f | Subtotal |\n" sum))
-            (insert "|----+----+----|\n"))
-        (let ((time (cdr feature)))
-          (insert (format "| %6f | %s | %s |\n" time (car feature) (cond ((>= time 0.4)  "XXX")
-                                                                         ((>= time 0.1)  "X")
-                                                                         ((>= time 0.05) ".")
-                                                                         (t              " "))))
-          (setq sum (+ sum time)))))
-    (save-excursion
-      (insert "|----+----+----|\n")
-      (insert (format "| %6f | Total |\n" sum))
-      (insert (format "| %s | On Init |\n" (emacs-init-time))))
-    (org-table-align)))
-
-
-(provide 'benchmark)