Remove hammer/generative_recommenders (#2526)
Summary:
Pull Request resolved: https://github.com/pytorch/benchmark/pull/2526
X-link: https://github.com/pytorch-labs/tritonbench/pull/19
As title
Reviewed By: xuzhao9, LinjianMa
Differential Revision: D65069124
fbshipit-source-id: 1ee736396fecc76d606e637fee7a8127603d9d7e
