Delta to Cut 6,000-6,900 Jobs  CHICAGO (Reuters) - Delta Air Lines &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=DAL.N target=/stocks/quickinfo/fullquote"&gt;DAL.N&lt;/A&gt; on Wednesday  said it plans to eliminate between 6,000 and 6,900 jobs during  the next 18 months, implement a 10 percent across-the-board pay  reduction and reduce employee benefits.