Disable llama_v2_7b_16h on optim benchmarks as they currently OOM (#1792)
Summary:
Fixes https://github.com/pytorch/benchmark/issues/1791
Pull Request resolved: https://github.com/pytorch/benchmark/pull/1792
Test Plan: https://github.com/pytorch/benchmark/actions/runs/5693564120 a run of the optim benchmarks
Reviewed By: xuzhao9
Differential Revision: D47873488
Pulled By: janeyx99
fbshipit-source-id: 322adb790aa739d5aff915de655641f17c6834e1