Remove redundant wrappers in torch.distributions (#16807)
Summary:
Changelog:
- Remove torch.distributions.multivariate_normal._batch_diag : same functionality is provided by torch.diagonal
- Remove torch.distributions.lowrank_multivariate_normal._batch_vector_diag : same functionality is provided by torch.diag_embed
Pull Request resolved: https://github.com/pytorch/pytorch/pull/16807
Differential Revision: D13985550
Pulled By: soumith
fbshipit-source-id: 25c7d00c52ff7f85e431134e9ce0d5dda453667b
