Deleting gallery pics

[Doc Holliday]

I inadvertently double uploaded a pic to my gallery but can't seem to find out how to delete it. Doctorwayne figured it out but then again he probably went to one of them there Ivy League universities whereas this doc got his diploma by mail.
Can you please let me know how to delete the duplicate pic or at least point me in th eright direction?
Mighty oblidged.
Doc