Revert D26655617: [quant][graphmode][fx][test][refactor] Refactoring binary op tests to split int8 and float16 tests
Test Plan: revert-hammer
Differential Revision:
D26655617 (https://github.com/pytorch/pytorch/commit/f2f7fdba05159e90b75b780cef29a0640a1f475c)
Original commit changeset: c36edef09f52
fbshipit-source-id: 7a43cfc9385e45f4532168d2c3d9227da2f1967f
