Delta Details Job Cuts Plan  NEW YORK (Reuters) - Delta Air Lines Inc. &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=DAL.N target=/stocks/quickinfo/fullquote"&gt;DAL.N&lt;/A&gt;, the No.  3 U.S. carrier, said on Sunday it will cut 2,000  aircraft-maintenance jobs, up to 3,100 customer-service jobs,  and between 1,600 and 1,800 supervisory and administrative  personnel as part of a previously announced plan to cut total  staffing by 7,000.