Revert D26375734: Implemented torch.linalg.multi_dot
Test Plan: revert-hammer
Differential Revision:
D26375734 (https://github.com/pytorch/pytorch/commit/0396f492b997d94ac9583c02b547d1c6b96e95bf)
Original commit changeset: 839642692424
fbshipit-source-id: cb64db646010128d802e1930d5e9526c1f7aa6a2
