Revert D29313058: add an embedding bag skeleton operators
Test Plan: revert-hammer
Differential Revision:
D29313058 (https://github.com/pytorch/pytorch/commit/ae21357adacee07615d28938e029000e882cbf5f)
Original commit changeset: b05df6ff9a7c
fbshipit-source-id: ef422aedad71dee6cb2824c58aceb66104376a65
Author
Rong Rong (AI Infra)
