Remove a duplication of a cast member in the "CAST"section of the film page.

Rograbbit: Please post the link to the film page and tell us which cast member has been duplicated. The answer may vary depending on how the name was duplicated. Specifically, it may depend on whether the second entry is for a different (actual) person with the same name or a separate name entry that is just an error and does not refer to a different actual person.