Revert "Markdown reader: Ignore blank line after ~~~~~~~~ in delimited code blocks."

This reverts commit 7ad17fe5cf.
We will soon have a better way of handling literate haskell.


git-svn-id: https://pandoc.googlecode.com/svn/trunk@1481 788f1e2b-df1e-0410-8736-df70ead52e1b

Text/Pandoc/Readers/Markdown.hs

@@ -380,8 +380,6 @@ keyValAttr = try $ do
 codeBlockDelimited :: GenParser Char st Block
 codeBlockDelimited = try $ do
   (size, attr) <- codeBlockDelimiter Nothing
-  optional blankline   -- this helps make literate haskell possible; it requires
-                       -- a blank line between comment and code
   contents <- manyTill anyLine (codeBlockDelimiter (Just size))
   blanklines
   return $ CodeBlock attr $ intercalate "\n" contents