Revert D31447610: Quantization docs: add pages for Numeric Suite (Eager and FX)
Test Plan: revert-hammer
Differential Revision:
D31447610 (https://github.com/pytorch/pytorch/commit/9539e6216bc122b604e8fb55c075d1d525c2522b)
Original commit changeset: 441170c4a6c3
fbshipit-source-id: b49bff54405cdb8465397077e38506a36b277921
