Kill THIntegerTensor, THDenseTensor, THDenseIndexTensor. (#32599)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/32599
these aren't used anymore.
Test Plan: Imported from OSS
Differential Revision: D19565655
Pulled By: gchanan
fbshipit-source-id: c0da31365df7342352f9850ae2a2e1e611a6886b
