refactor(server): remove redundant logics of rank

[hanxiao]

No description provided.

[codecov]

Codecov Report

Merging #715 (59389e6) into main (edf0d86) will decrease coverage by 0.59%.
The diff coverage is 96.15%.

@@            Coverage Diff             @@
##             main     #715      +/-   ##
==========================================
- Coverage   81.24%   80.64%   -0.60%     
==========================================
  Files          16       16              
  Lines        1189     1111      -78     
==========================================
- Hits          966      896      -70     
+ Misses        223      215       -8     

Flag	Coverage Δ
cas	80.64% <96.15%> (-0.60%)	⬇️

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Impacted Files	Coverage Δ
server/clip_server/executors/helper.py	95.00% <93.54%> (-2.30%)	⬇️
server/clip_server/executors/clip_onnx.py	83.92% <100.00%> (-2.59%)	⬇️
server/clip_server/executors/clip_tensorrt.py	100.00% <100.00%> (+4.10%)	⬆️
server/clip_server/executors/clip_torch.py	85.41% <100.00%> (-2.68%)	⬇️
server/clip_server/model/simple_tokenizer.py	94.89% <0.00%> (+1.02%)	⬆️

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