Delete unused bernoulli_Tensor from THTensorRandom.h
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/32328
Test Plan: Imported from OSS
Differential Revision: D19448736
Pulled By: pbelevich
fbshipit-source-id: 92380ca1e0c0ac88d100e6fba8d216a46d0b181e
