CLIP, ErnieViL, ChineseCLIP Remove from_pretrained_v2

[JunnYu]

PR types

Function optimization

PR changes

APIs

Description

• 由于这里增加了判断，因此我们无需重写这个代码。
  

  PaddleNLP/paddlenlp/transformers/model_utils.py

  Lines 1331 to 1332 in 2992a81

  	if not os.path.exists(os.path.join(cache_dir, CONFIG_NAME)):
  	config.save_pretrained(cache_dir)

• 现有的CLIP, ErnieViL, ChineseCLIP的模型的config均是最新的config.json。

[paddle-bot]

Thanks for your contribution!

[codecov]

Codecov Report

Merging #4797 (acb376d) into develop (2992a81) will decrease coverage by 0.07%.
The diff coverage is n/a.

@@             Coverage Diff             @@
##           develop    #4797      +/-   ##
===========================================
- Coverage    44.14%   44.08%   -0.07%     
===========================================
  Files          443      443              
  Lines        63440    63334     -106     
===========================================
- Hits         28008    27920      -88     
+ Misses       35432    35414      -18     

Impacted Files	Coverage Δ
paddlenlp/transformers/chineseclip/modeling.py	85.48% <ø> (-0.03%)	⬇️
paddlenlp/transformers/clip/modeling.py	58.91% <ø> (-1.78%)	⬇️
paddlenlp/transformers/ernie_vil/modeling.py	77.63% <ø> (-1.96%)	⬇️
paddlenlp/transformers/t5/modeling.py	85.11% <0.00%> (+0.29%)	⬆️
paddlenlp/utils/downloader.py	66.07% <0.00%> (+0.88%)	⬆️

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[sijunhe]

lgtm