US Air to Cut Some Management Jobs  WASHINGTON (Reuters) - Bankrupt US Airways Group. Inc.  &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=UAIRQ.OB target=/stocks/quickinfo/fullquote"&gt;UAIRQ.OB&lt;/A&gt; said on Monday it would eliminate hundreds of  management and nonunion jobs and impose wage and other cuts to  save more than \$45 million annually as it tries to overhaul its  business and survive.