Revert "[algo] fix: Add seq mean mask denominator option"#4769

wuxibin89 merged 1 commit intomainverl-project/verl:mainfrom

revert-4510-add_seq_mean_mask_denominator_optionverl-project/verl:revert-4510-add_seq_mean_mask_denominator_optionCopy head branch name to clipboard