Revert previous commit since the bug has been fixed already

README.org

@@ -2332,8 +2332,7 @@ list detailing and motivating each listing:
      (lilypond . ,(fboundp 'lilypond-mode))
      (lisp . t)
      (lua . ,(fboundp 'lua-mode))
-     ;; BUG: WIP: using ob-maxima makes org-lint error.
-     (maxima . nil)
+     (maxima . t)
      (org . t)
      (perl . t)
      ;; Beware: Python activation must not call still unbound functions.
@@ -5581,7 +5580,6 @@ byte code:
 ** [[info:maxima#Top][Maxima Programming (info)]]
 :PROPERTIES:
 :CUSTOM_ID: sec:maxima-programming
-:header-args:maxima: :eval never :BUG: :WIP:
 :END:
 
 Listing [[lst:configure-maxima]] configures the built-in =maxima= library. The