quantization docs: remove erroneous rebase artifact (#66577)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/66577
There was a rebase artifact erroneously landed to quantization docs,
this PR removes it.
Test Plan:
CI
Imported from OSS
Reviewed By: soulitzer
Differential Revision: D31651350
fbshipit-source-id: bc254cbb20724e49e1a0ec6eb6d89b28491f9f78