Delete some compat code for very old Emacs versions

* lisp/apropos.el (apropos-local-value):
* lisp/ido.el (ido-buffer-internal):
* lisp/leim/quail/ipa.el (ipa-x-sampa-prepend-to-keymap-entry):
* lisp/obsolete/iswitchb.el (iswitchb-possible-new-buffer):
* lisp/speedbar.el (speedbar-create-tag-hierarchy): Delete compat code
for very old versions of Emacs.
* lisp/gnus/nnmail.el (nnmail-fancy-expiry-target): Avoid using
obsolete name.

lisp/apropos.el

@@ -874,7 +874,7 @@ Optional arg BUFFER (default: current buffer) is the buffer to check."
                             apropos-all-words apropos-accumulator))
          (setq var  (apropos-value-internal #'local-variable-if-set-p symb
                                             #'symbol-value)))
-       (when (and (fboundp 'apropos-false-hit-str)  (apropos-false-hit-str var))
+       (when (apropos-false-hit-str var)
          (setq var nil))
        (when var
          (setq apropos-accumulator (cons (list symb (apropos-score-str var) nil var)

lisp/gnus/nnmail.el

@@ -1937,9 +1937,7 @@ If TIME is nil, then return the cutoff time for oldness instead."
 		 (and (string-match (cadr regexp-target-pair) to)
 		      (let ((mail-dont-reply-to-names
 			     (message-dont-reply-to-names)))
-			(equal (if (fboundp 'rmail-dont-reply-to)
-				   (rmail-dont-reply-to from)
-				 (mail-dont-reply-to from)) "")))))
+                        (equal (mail-dont-reply-to from) "")))))
 	(setq target (format-time-string (caddr regexp-target-pair) date)))
        ((and (not (equal header 'to-from))
 	     (string-match (cadr regexp-target-pair)

lisp/ido.el

@@ -2238,8 +2238,7 @@ If cursor is not at the end of the user input, move to end of input."
        (t
 	(add-to-history 'buffer-name-history buf)
 	(setq buf (get-buffer-create buf))
-	(if (fboundp 'set-buffer-major-mode)
-	    (set-buffer-major-mode buf))
+        (set-buffer-major-mode buf)
 	(ido-visit-buffer buf method t))))))
 
 (defun ido-record-work-directory (&optional dir)

lisp/leim/quail/ipa.el

@@ -269,7 +269,7 @@ QUAIL-KEYMAP is a cons that satisfies `quail-map-p'; TO-PREPEND is a
 string."
   (when (consp quail-keymap) (setq quail-keymap (cdr quail-keymap)))
   (if (or (integerp quail-keymap)
-	  (and (fboundp 'characterp) (characterp quail-keymap)))
+          (characterp quail-keymap))
       (setq quail-keymap (list (string quail-keymap)))
     (if (stringp quail-keymap)
 	(setq quail-keymap (list quail-keymap))

lisp/obsolete/iswitchb.el

@@ -1064,8 +1064,7 @@ Return the modified list with the last element prepended to it."
 	;; then create a new buffer
 	(progn
 	  (setq newbufcreated (get-buffer-create buf))
-	  (if (fboundp 'set-buffer-major-mode)
-	      (set-buffer-major-mode newbufcreated))
+          (set-buffer-major-mode newbufcreated)
 	  (iswitchb-visit-buffer newbufcreated))
       ;; else won't create new buffer
       (message "no buffer matching `%s'" buf))))

lisp/speedbar.el

@@ -2276,9 +2276,7 @@ the list."
 		      (with-current-buffer (get-file-buffer f)
                         speedbar-tag-hierarchy-method)
 		    speedbar-tag-hierarchy-method))
-	 (lst (if (fboundp 'copy-tree)
-		  (copy-tree lst)
-		lst)))
+         (lst (copy-tree lst)))
     (while methods
       (setq lst (funcall (car methods) lst)
 	    methods (cdr methods)))