simplify list_data_collate and collate_meta_tensor (#7165)
#1262
| Job | Run time |
|---|---|
| 7m 3s | |
| 7m 57s | |
| 31m 44s | |
| 1h 22m 37s | |
| 46m 46s | |
| 1h 3m 50s | |
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| 39m 2s | |
| 4h 46m 6s |