Nikhila Ravi 52c71b8816 Update Harmonic embedding in NeRF
Summary: Removed harmonic embedding function from projects/nerf and changed import to be from core pytorch3d.

Reviewed By: patricklabatut

Differential Revision: D33142358

fbshipit-source-id: 3004247d50392dbd04ea72e9cd4bace0dc03606b
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2021-12-21 15:05:33 -08:00