Make compat alias image-refresh obsolete

* lisp/image.el (image-refresh): Make compat alias obsolete.
Update callers.

lisp/image.el

@@ -32,7 +32,6 @@
   :group 'multimedia)
 
 (declare-function image-flush "image.c" (spec &optional frame))
-(defalias 'image-refresh 'image-flush)
 
 (defconst image-type-header-regexps
   `(("\\`/[\t\n\r ]*\\*.*XPM.\\*/" . xpm)
@@ -1304,6 +1303,8 @@ changing the displayed image size does not affect the saved image."
     (setf (image-property image :flip)
           (not (image-property image :flip)))))
 
+(define-obsolete-function-alias 'image-refresh #'image-flush "29.1")
+
 (provide 'image)
 
 ;;; image.el ends here

lisp/org/org-plot.el

@@ -622,7 +622,7 @@ manner suitable for prepending to a user-specified script."
   (dolist (img-overlay org-inline-image-overlays)
     (when (string= img-file (plist-get (cdr (overlay-get img-overlay 'display)) :file))
       (when (file-exists-p img-file)
-        (image-refresh (overlay-get img-overlay 'display))))))
+        (image-flush (overlay-get img-overlay 'display))))))
 
 ;;-----------------------------------------------------------------------------
 ;; facade functions

lisp/org/org.el

@@ -16487,7 +16487,7 @@ INCLUDE-LINKED is passed to `org-display-inline-images'."
     (org-toggle-inline-images)))
 
 ;; For without-x builds.
-(declare-function image-refresh "image" (spec &optional frame))
+(declare-function image-flush "image" (spec &optional frame))
 
 (defcustom org-display-remote-inline-images 'skip
   "How to display remote inline images.
@@ -16628,7 +16628,7 @@ buffer boundaries with possible narrowing."
 				(org-element-property :begin link)
 				'org-image-overlay)))
 		      (if (and (car-safe old) refresh)
-			  (image-refresh (overlay-get (cdr old) 'display))
+                          (image-flush (overlay-get (cdr old) 'display))
 			(let ((image (org--create-inline-image file width)))
 			  (when image
 			    (let ((ov (make-overlay