Dean Foods Exits Nutritional Beverages  NEW YORK (Reuters) - Dean Foods Co. &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=DF.N target=/stocks/quickinfo/fullquote"&gt;DF.N&lt;/A&gt;, the largest  U.S. dairy company, on Friday said it expects to take \$10.2  million of charges as it exits the nutritional beverage  business and closes a Michigan plant.