[nn] MarginRankingLoss : no batch dim (#64975)
Summary:
Reference: https://github.com/pytorch/pytorch/issues/60585
cc albanD mruberry jbschlosser walterddr
Pull Request resolved: https://github.com/pytorch/pytorch/pull/64975
Reviewed By: albanD
Differential Revision: D31906528
Pulled By: jbschlosser
fbshipit-source-id: 1127242a859085b1e06a4b71be19ad55049b38ba
