Remove duplicated entries in `native_functions.yaml` (#38389)
Summary:
`use_c10_dispatcher: full` appears twice in some entries.
This PR removes duplicated ones.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/38389
Differential Revision: D21549098
Pulled By: zou3519
fbshipit-source-id: 4e456f740d5b4d4519650c0854a273d87fbc5f09
