No. If you deleted your account, all your sent snaps will also be removed. However, there are other ways to delete a snap that you send. To do this, open the Snapchat application, tap on the Menu button, go to My friends, tap on your name on the top of the contact list, find the snap that you want to remove, click the gear icon next to each snap and select delete. This will also remove the snap without the need to delete your account.