Features\ExcelServerSite\Microsoft.Office.Excel.WebUI.dwp is referenced in the database, but is not installed on the current farm

I was getting above error while migrating contents from 2007 to 2010, as per this MSDN links we can ignore this error while migration.

http://social.technet.microsoft.com/Forums/en-US/sharepoint2010setup/thread/539c4086-0bfe-4c87-9b0a-c4d65642340f/