removing mention of 'babel' as a supported interpreter

lisp/org-babel.el

@@ -100,7 +100,6 @@ sh         Pass command to the shell and display the result
 perl       The perl interpreter
 python     The python interpreter
 ruby       The ruby interpreter
-babel      A degenerate source block (no body) to implement library-of-babel calls
 
 The source block regexp `org-babel-src-block-regexp' is updated
 when a new interpreter is added to this list through the
@@ -114,8 +113,7 @@ lisp code use the `org-babel-add-interpreter' function."
               (const "sh")
 	      (const "perl")
 	      (const "python")
-	      (const "ruby")
-  	      (const "babel")))
+	      (const "ruby")))
 
 ;;; functions
 (defun org-babel-pop-to-session (&optional arg info)