Revert D25746115: [pytorch][PR] Improve documentation and warning message for creation of a tensor with from_numpy()
Test Plan: revert-hammer
Differential Revision:
D25746115 (https://github.com/pytorch/pytorch/commit/4a6c178f73f523410f237dc16da4eb1ed34a427d)
Original commit changeset: 3e534a8f2bc1
fbshipit-source-id: 12c921cf2d062794ce45afcaed1fbedc28dcdd01
