fix redundancy package import. (#8754)

### What problem does this PR solve?

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### Type of change

- [ ] Bug Fix (non-breaking change which fixes an issue)
- [ ] New Feature (non-breaking change which adds functionality)
- [ ] Documentation Update
- [x] Refactoring
- [x] Performance Improvement
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Signed-off-by: zhanluxianshen <zhanluxianshen@163.com>

pyproject.toml

@@ -112,12 +112,10 @@ dependencies = [
     "xpinyin==0.7.6",
     "yfinance==0.1.96",
     "zhipuai==2.0.1",
-    "ruamel-yaml>=0.18.6,<0.19.0",
     "google-generativeai>=0.8.1,<0.9.0",
     "python-docx>=1.1.2,<2.0.0",
     "pypdf2>=3.0.1,<4.0.0",
     "graspologic>=3.4.1,<4.0.0",
-    "pymysql>=1.1.1,<2.0.0",
     "mini-racer>=0.12.4,<0.13.0",
     "pyodbc>=5.2.0,<6.0.0",
     "pyicu>=2.13.1,<3.0.0",