Revert "ox-md.el (org-md-underline): New function"

This reverts commit abc94ec96ab4d17342ee2527e6757447e49cf1b2.

lisp/ox-md.el

@@ -69,8 +69,6 @@ This variable can be set to either `atx' or `setext'."
 	       (org-open-file (org-md-export-to-markdown nil s v)))))))
   :translate-alist ((bold . org-md-bold)
 		    (code . org-md-verbatim)
-		    (verbatim . org-md-verbatim)
-		    (underline . org-md-underline)
 		    (comment . (lambda (&rest args) ""))
 		    (comment-block . (lambda (&rest args) ""))
 		    (example-block . org-md-example-block)
@@ -91,7 +89,8 @@ This variable can be set to either `atx' or `setext'."
 		    (quote-section . org-md-example-block)
 		    (section . org-md-section)
 		    (src-block . org-md-example-block)
-		    (template . org-md-template)))
+		    (template . org-md-template)
+		    (verbatim . org-md-verbatim)))
 
 
 
@@ -126,14 +125,6 @@ CONTENTS is the text within bold markup.  INFO is a plist used as
 a communication channel."
   (format "**%s**" contents))
 
-;;;; Underline
-
-(defun org-md-underline (underline contents info)
-  "Transcode UNDERLINE object into Markdown format.
-CONTENTS is the text within underline markup.  INFO is a plist
-used as a communication channel."
-  ;; Return the bare text as MarkDown does not support underlining
-  contents)
 
 ;;;; Code and Verbatim