Remove truncate in distributed training

[KB-Ding]

PR types

Bug fixes

PR changes

APIs

Description

Remove truncate in distributed training

[paddle-bot[bot]]

Thanks for your contribution!

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 33.33333% with 2 lines in your changes are missing coverage. Please review.

Project coverage is 55.36%. Comparing base (fdcabf8) to head (ea27eb6). Report is 3 commits behind head on develop.

Files	Patch %	Lines
paddlenlp/trainer/trainer.py	33.33%	2 Missing :warning:

Additional details and impacted files

@@           Coverage Diff            @@
##           develop    #8362   +/-   ##
========================================
  Coverage    55.36%   55.36%           
========================================
  Files          614      614           
  Lines        96016    96016           
========================================
  Hits         53164    53164           
  Misses       42852    42852           

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