Delete a User Story

If you are assigned to a product as a team member, you can delete a user story. When a user story is deleted, the following user story details are also deleted:

Dependencies the user story requires
Acceptance criteria
Tasks that are part of the user story
Comments

Deleting a user story has the following effects on burndown charts:

Any hours reported for tasks belonging to the deleted user story are deleted.
The burndown chart guidelines are adjusted to reflect the hours or the deleted points. The adjustment is effective from the day the user story was deleted.
The actual burndown and burnup lines show any points or hours for the deleted user story and its tasks.