Remove dead code from src/codegen directory

[devin-ai-integration]

Remove dead code from src/codegen directory

This PR removes unused functions and classes from the src/codegen directory using a codemod. The codemod preserves tests, API endpoints, and other essential code.

The codemod identified and removed 55 unused functions and classes across various files in the codebase.

Implementation Details

• Created a codemod that analyzes the codebase to identify unused code
• Preserved test files, API endpoints, and other essential code
• Added detailed logging to track removed functions and classes
• Fixed lint issues in modified files

Changes

• Removed 55 unused functions and classes from 42 files
• Fixed lint issues in 3 files:
  • Removed unused imports in src/codegen/extensions/langchain/__init__.py
  • Fixed type reference in src/codegen/sdk/core/parser.py
  • Updated __all__ list in src/codegen/sdk/utils.py

Link to Devin run: https://app.devin.ai/sessions/a49eac87da644fa9ac1144fe130b847e
Requested by: tramteke

[devin-ai-integration]

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[devin-ai-integration]

Closing due to inactivity.