Use key-translate instead of keyboard-translate

As a consequence of the discussions in Bug#65735, move to using the
new key-translate function instead of the deprecated
keyboard-translate.

For future maintainers: ?\C-? or ?\177 do not mean "DEL" with
key-translate, you have to use "DEL".

* lisp/simple.el (normal-erase-is-backspace-mode): Use key-translate.
* lisp/term/bobcat.el (terminal-init-bobcat): Use key-translate.

lisp/simple.el

@@ -10671,10 +10671,10 @@ See also `normal-erase-is-backspace'."
 	  (t
 	   (if enabled
 	       (progn
-		 (keyboard-translate ?\C-h ?\C-?)
-		 (keyboard-translate ?\C-? ?\C-d))
-	     (keyboard-translate ?\C-h ?\C-h)
-	     (keyboard-translate ?\C-? ?\C-?))))
+                 (key-translate "C-h" "DEL")
+                 (key-translate "DEL" "C-d"))
+             (key-translate "C-h" "C-h")
+             (key-translate "DEL" "DEL"))))
 
     (if (called-interactively-p 'interactive)
 	(message "Delete key deletes %s"

lisp/term/bobcat.el

@@ -3,8 +3,8 @@
 (defun terminal-init-bobcat ()
   "Terminal initialization function for bobcat."
   ;; HP terminals usually encourage using ^H as the rubout character
-  (keyboard-translate ?\177 ?\^h)
-  (keyboard-translate ?\^h ?\177))
+  (key-translate "DEL" "C-h")
+  (key-translate "C-h" "DEL"))
 
 (provide 'term/bobcat)