Remove unnecessary typename in F14Table.h (#1056)
Remove unnecessary typename in F14Table.h (#1056)

Summary:
- Remove unneeded typename for a using alias in `F14Table.h`.
Pull Request resolved: https://github.com/facebook/folly/pull/1056

Reviewed By: nbronson

Differential Revision: D14473219

Pulled By: yfeldblum

fbshipit-source-id: a6ac26c42dbca219ce123aff00b1ee7079068007

facebook/folly,facebook/folly,facebook/folly,facebook/folly,facebook/folly