Instructions
Scroll down to the Recent Drafts section

Select Manage Drafts:

Click Delete (trash can) icon next to the draft you wish to delete:

Select Delete? to confirm the deletion:

Your draft has been deleted:

Scroll down to the Recent Drafts section 
Select Manage Drafts:
Click Delete (trash can) icon next to the draft you wish to delete:![]()
Select Delete? to confirm the deletion:
Your draft has been deleted: