I may have misunderstood your question, but if you wish to delete the 1099-R, simply go to Retirement plans, select 1099-R, and then select and delete the appropriate one.
If there is an issue with the way the 1099-R is posted (I think that's what you mean by annuity) you can still delete that record which will take everything associated with it away. Then repost it the way you want it.
**Say "Thanks" by clicking the thumb icon in a post
**Mark the post that answers your question by clicking on "Mark as Best Answer"