Revert "org-lint: Tolerate drawers in footnotes section"

This reverts commit f0b3fa5e6ed670218e5b3314bc803007d18bda5e.

lisp/org-lint.el

@@ -836,7 +836,7 @@ Use \"export %s\" instead"
 	   (org-element-map (org-element-contents h)
 	       (cl-remove-if
 		(lambda (e)
-		  (memq e '(comment comment-block drawer footnote-definition
+		  (memq e '(comment comment-block footnote-definition
 				    property-drawer section)))
 		org-element-all-elements)
 	     (lambda (e)