This feature is available in Catalyst, Enterprise, and Ultimate editions.
By default, the My Work page displays three grids that are primarily focused on team tracking: Workitem Summary, Member Summary, and Sprint/Iteration Summary. While these grids work for most people, they may not work well for you. The good news is that you can customize this page to reflect the way you work by adding or removing the grids you use most.
Select My Home > My Views > My Work.
Click in right corner of the page, clear the checkbox(es) next to the grids you want to remove.