* lisp/cedet/semantic: Remove some dead code

* lisp/cedet/semantic/util-modes.el
(semantic-stickyfunc-header-line-format): Emacs<22 is not supported
any more.
* lisp/cedet/semantic/fw.el (semantic-buffer-local-value): Emacs<21 is
not supported any more.
(semantic-safe): Use `declare'.
* lisp/cedet/semantic/decorate.el (semantic-set-tag-intangible)
(semantic-tag-intangible-p): Remove unused functions.
* lisp/cedet/semantic/complete.el (semantic-displayor-window-edges):
Remove unused function.

lisp/cedet/semantic/complete.el

@@ -1707,15 +1707,6 @@ Display mechanism using tooltip for a list of possible completions.")
 
 ;;; Compatibility
 ;;
-(eval-and-compile
-  (if (fboundp 'window-inside-edges)
-      ;; Emacs devel.
-      (defalias 'semantic-displayor-window-edges
-        'window-inside-edges)
-    ;; Emacs 21
-    (defalias 'semantic-displayor-window-edges
-      'window-edges)
-    ))
 
 (defun semantic-displayor-point-position ()
   "Return the location of POINT as positioned on the selected frame.

lisp/cedet/semantic/decorate.el

@@ -88,20 +88,6 @@ If VISIBLE is non-nil, make the text visible."
   "Return non-nil if TAG is invisible."
   (semantic-overlay-get (semantic-tag-overlay tag) 'invisible))
 
-(defun semantic-set-tag-intangible (tag &optional tangible)
-  "Enable the text in TAG to be made intangible.
-If TANGIBLE is non-nil, make the text visible.
-This function does not have meaning in XEmacs because it seems that
-the extent 'intangible' property does not exist."
-  (semantic-overlay-put (semantic-tag-overlay tag) 'intangible
-			(not tangible)))
-
-(defun semantic-tag-intangible-p (tag)
-  "Return non-nil if TAG is intangible.
-This function does not have meaning in XEmacs because it seems that
-the extent 'intangible' property does not exist."
-  (semantic-overlay-get (semantic-tag-overlay tag) 'intangible))
-
 (defun semantic-overlay-signal-read-only
   (overlay after start end &optional len)
   "Hook used in modification hooks to prevent modification.

lisp/cedet/semantic/decorate/mode.el

@@ -393,7 +393,7 @@ must return non-nil to indicate that the tag should be decorated by
 `NAME-highlight'.
 
 To put primary decorations on a tag `NAME-highlight' must use
-functions like `semantic-set-tag-face', `semantic-set-tag-intangible',
+functions like `semantic-set-tag-face', `semantic-set-tag-read-only',
 etc., found in the semantic-decorate library.
 
 To add other kind of decorations on a tag, `NAME-highlight' must use

lisp/cedet/semantic/fw.el

@@ -38,6 +38,7 @@
   (if (featurep 'xemacs)
       (progn
 	(defalias 'semantic-buffer-local-value 'symbol-value-in-buffer)
+        ;; FIXME: Why not just (require 'overlay)?
 	(defalias 'semantic-overlay-live-p
 	  (lambda (o)
 	    (and (extent-live-p o)
@@ -113,12 +114,8 @@
       "Extract the window from EVENT."
       (car (car (cdr event))))
 
-    (if (> emacs-major-version 21)
-	(defalias 'semantic-buffer-local-value 'buffer-local-value)
+    (defalias 'semantic-buffer-local-value 'buffer-local-value)
 
-      (defun semantic-buffer-local-value (sym &optional buf)
-	"Get the value of SYM from buffer local variable in BUF."
-	(cdr (assoc sym (buffer-local-variables buf)))))
     )
 
 
@@ -306,7 +303,7 @@ error message.
 If `debug-on-error' is set, errors are not caught, so that you can
 debug them.
 Avoid using a large BODY since it is duplicated."
-  ;;(declare (debug t) (indent 1))
+  (declare (debug t) (indent 1))
   `(if debug-on-error
        ;;(let ((inhibit-quit nil)) ,@body)
        ;; Note to self: Doing the above screws up the wisent parser.
@@ -317,7 +314,6 @@ Avoid using a large BODY since it is duplicated."
         (message ,format (format "%S - %s" (current-buffer)
                                  (error-message-string err)))
         nil))))
-(put 'semantic-safe 'lisp-indent-function 1)
 
 ;;; Misc utilities
 ;;

lisp/cedet/semantic/util-modes.el

@@ -684,15 +684,11 @@ when it lands in the sticky line."
 (defconst semantic-stickyfunc-header-line-format
   (cond ((featurep 'xemacs)
 	 nil)
-	((>= emacs-major-version 22)
+	(t
 	 '(:eval (list
 		  ;; Magic bit I found on emacswiki.
 		  (propertize " " 'display '((space :align-to 0)))
-		  (semantic-stickyfunc-fetch-stickyline))))
-	((= emacs-major-version 21)
-	 '(:eval (list semantic-stickyfunc-indent-string
-		       (semantic-stickyfunc-fetch-stickyline))))
-	(t nil))
+		  (semantic-stickyfunc-fetch-stickyline)))))
   "The header line format used by stickyfunc mode.")
 
 ;;;###autoload
@@ -719,7 +715,7 @@ minor mode is enabled."
 	(unless (boundp 'default-header-line-format)
 	  ;; Disable if there are no header lines to use.
 	  (setq semantic-stickyfunc-mode nil)
-	  (error "Sticky Function mode requires Emacs 21"))
+	  (error "Sticky Function mode requires Emacs"))
 	;; Enable the mode
 	;; Save previous buffer local value of header line format.
 	(when (and (local-variable-p 'header-line-format (current-buffer))