Why repeat 2 times in _pairwise_EMD_CD_ metric?

[BuLingBin]

Hi, nice work! @ZENGXH
I want know why you repeat 2 same pairwise_EMD_CD function here:

LION/utils/evaluation_metrics_fast.py

Line 481 in 155a22f

M_rs_cd, M_rs_emd = _pairwise_EMD_CD_(metric, ref_pcs,

Thanks!

[ZENGXH]

it's a typo in the evaluation. doing it one is enough