Removed shell=True from subprocess commands that require user inputs

[JWLee89]

This PR involves the following changes

• Removal of unused arguments in functions
• Removed shell=True from subprocess calls where user-defined inputs are provided (to prevent possible unwanted injection)

I ran the scripts after modification inside of the yolo docker container and checked manually to see if it works.
If needed I can also post serialized outputs and computational graph generated by netron.

🛠️ PR Summary

_{Made with ❤️ by Ultralytics Actions}

🌟 Summary

Enhancements to model export functionality in 'ultralytics/yolov5.'

📊 Key Changes

• Simplified function signatures by removing unnecessary model and im parameters from OpenVINO, TensorFlow GraphDef (pb), Edge TPU, and TensorFlow.js export functions.
• Replaced subprocess.check_output and subprocess.run with shell=True to use .split() method, enhancing security and preventing shell injection vulnerabilities.

🎯 Purpose & Impact

• 🛠 Code Simplicity: Removing unused parameters makes the codebase cleaner and easier to understand.
• 🔒 Security Improvement: Moving away from shell=True prevents execution of arbitrary code, making exports more secure.
• 👩‍💻 Developer Experience: These changes could improve the maintainability and contribute to the robustness of the export functionality for developers.
• 🏃‍♂️ Operational Efficiency: Users can export models more safely and potentially with fewer errors or complications.

[github-actions]

👋 Hello @JWLee89, thank you for submitting a YOLOv5 🚀 PR! To allow your work to be integrated as seamlessly as possible, we advise you to:

• ✅ Verify your PR is up-to-date with upstream/master. If your PR is behind upstream/master an automatic GitHub Actions merge may be attempted by writing /rebase in a new comment, or by running the following code, replacing 'feature' with the name of your local branch:

git remote add upstream https://github.com/ultralytics/yolov5.git
git fetch upstream
# git checkout feature  # <--- replace 'feature' with local branch name
git merge upstream/master
git push -u origin -f

• ✅ Verify all Continuous Integration (CI) checks are passing.
• ✅ Reduce changes to the absolute minimum required for your bug fix or feature addition. "It is not daily increase but daily decrease, hack away the unessential. The closer to the source, the less wastage there is." -Bruce Lee

[glenn-jocher]

@JWLee89 PR is merged. Thank you for your contributions to YOLOv5 🚀 and Vision AI ⭐

[JWLee89]

@glenn-jocher Thank you for reviewing my PR.

Looking forward to working on yolov5 during my downtime!

[glenn-jocher]

@JWLee89 you're welcome! Our team is grateful for your valuable contributions to YOLOv5. Let us know if you have any questions or need assistance during your work on the project. Happy coding!