lisp/emacs-lisp/seq.el: remove unnecessary compatibility code

* lisp/emacs-lisp/seq.el (seq-take, seq--activate-font-lock-keywords):
Simplify unnecessarily guarded code, as this file will only ever be
used with the same version of Emacs.

diff --git a/lisp/emacs-lisp/seq.el b/lisp/emacs-lisp/seq.el
index b6f0f66e5b1d657fdc51c5521e7759c7962a49e2..1b4a49e4e322f174843e60340d7e0e827b95c53f 100644 (file)
--- a/lisp/emacs-lisp/seq.el
+++ b/lisp/emacs-lisp/seq.el
@@ -618,13 +618,7 @@ Signal an error if SEQUENCE is empty."
 
 (cl-defmethod seq-take ((list list) n)
   "Optimized implementation of `seq-take' for lists."
-  (if (eval-when-compile (fboundp 'take))
-      (take n list)
-    (let ((result '()))
-      (while (and list (> n 0))
-        (setq n (1- n))
-        (push (pop list) result))
-      (nreverse result))))
+  (take n list))
 
 (cl-defmethod seq-drop-while (pred (list list))
   "Optimized implementation of `seq-drop-while' for lists."
@@ -655,16 +649,6 @@ Signal an error if SEQUENCE is empty."
       sequence
     (concat sequence)))
 
-(defun seq--activate-font-lock-keywords ()
-  "Activate font-lock keywords for some symbols defined in seq."
-  (font-lock-add-keywords 'emacs-lisp-mode
-                          '("\\<seq-doseq\\>" "\\<seq-let\\>")))
-
-(unless (fboundp 'elisp--font-lock-flush-elisp-buffers)
-  ;; In Emacs≥25, (via elisp--font-lock-flush-elisp-buffers and a few others)
-  ;; we automatically highlight macros.
-  (add-hook 'emacs-lisp-mode-hook #'seq--activate-font-lock-keywords))
-
 (defun seq-split (sequence length)
   "Split SEQUENCE into a list of sub-sequences of at most LENGTH.
 All the sub-sequences will be of LENGTH, except the last one,