deploy reports in ssrs which are renamed and avoid multiple copies

Hi, I have renamed few of my reports renamed and checked in. Usually we deploy it from BIDS off of TFS reports solution. We are using SQL Server 2008 R2 version. I tried deploying these reports to DEV & QA environments and report manager has 2 copies of the same report one with the old name & the other with the rename. What would be the approriate way to delete these reports from Production without having to do it manually.

Thanks in advance...........

Ione