Sync `org-babel-temp-file' definition with maint

lisp/ob-core.el

@@ -2585,18 +2585,14 @@ Emacs shutdown."))
 Passes PREFIX and SUFFIX directly to `make-temp-file' with the
 value of `temporary-file-directory' temporarily set to the value
 of `org-babel-temporary-directory'."
-  (if (file-remote-p default-directory)
-      (make-temp-file
-       (concat (file-remote-p default-directory)
-	       (expand-file-name
-		prefix temporary-file-directory)
-	       nil suffix))
-    (let ((temporary-file-directory
+  (let ((temporary-file-directory
+	 (if (file-remote-p default-directory)
+	     (concat (file-remote-p default-directory) "/tmp")
 	   (or (and (boundp 'org-babel-temporary-directory)
 		    (file-exists-p org-babel-temporary-directory)
 		    org-babel-temporary-directory)
-	       temporary-file-directory)))
-      (make-temp-file prefix nil suffix))))
+	       temporary-file-directory))))
+      (make-temp-file prefix nil suffix)))
 
 (defun org-babel-remove-temporary-directory ()
   "Remove `org-babel-temporary-directory' on Emacs shutdown."