Address IRDS warnings on pt.list_datasets()

[cmacdonald]

[INFO] trec-robust04 is deprecated. Consider using disks45/nocr/trec-robust-2004 instead, which provides better parsing of the corpus.
[INFO] trec-robust04/fold1 is deprecated. Consider using disks45/nocr/trec-robust-2004/fold1 instead, which provides better parsing of the corpus.
[INFO] trec-robust04/fold2 is deprecated. Consider using disks45/nocr/trec-robust-2004/fold2 instead, which provides better parsing of the corpus.
[INFO] trec-robust04/fold3 is deprecated. Consider using disks45/nocr/trec-robust-2004/fold3 instead, which provides better parsing of the corpus.
[INFO] trec-robust04/fold4 is deprecated. Consider using disks45/nocr/trec-robust-2004/fold4 instead, which provides better parsing of the corpus.
[INFO] trec-robust04/fold5 is deprecated. Consider using disks45/nocr/trec-robust-2004/fold5 instead, which provides better parsing of the corpus.
[INFO] acessing TREC Fair Ranking 2021 through trec-fair-2021 is deprecated; use trec-fair/2021 instead.
[INFO] acessing TREC Fair Ranking 2021 through trec-fair-2021/train is deprecated; use trec-fair/2021/train instead.
[INFO] acessing TREC Fair Ranking 2021 through trec-fair-2021/train is deprecated; use trec-fair/2021/train instead.