Removed unnecessary call to '_strong_wolfe' in LBFGS. (#36453)
Summary:
It was called twice, but the result of the first invocation was not used.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/36453
Differential Revision: D20993535
Pulled By: yf225
fbshipit-source-id: 4d85207a936b846866424903d7622905f3fddd36
