Fix #961: Remove root_dir args and visualization from evaluate_image_boxes and evaluate_boxes function

[Samia35-2973]

This addresses issue #961 by making the following changes:

• Removed the root_dir argument from both the evaluate_image_boxes and evaluate_boxes functions as it was unnecessary.
• Removed the visualization component in the evaluate_image_boxes function

[henrykironde]

Under review: ff66fac

[henrykironde]

Thanks @Samia35-2973 for getting to work on this issue. I expected some changes in the tests too.

[Samia35-2973]

Thank you for the feedback @henrykironde. I am working on the test cases.

[Samia35-2973]

• I’ve updated evaluate.py by removing the root_dir arguments, as I had previously missed a few instances.
• Additionally, I modified test_evaluate.py as requested, removing root_dir from the calls to evaluate_image_boxes() and evaluate_boxes().
• In the test_evaluate_boxes_save_images method, I also removed the assertion checking for saved images, since evaluate_boxes() no longer saves comparison files.

All tests pass locally after these updates. Please let me know if anything needs further clarification or if there are any additional changes you'd like me to make.

[henrykironde]

Why are we removing this assert?

[Samia35-2973]

In the evaluate.py file, the evaluate_boxes() only saves images if the root_dir is provided to locate the original image files. As I removed the root_dir from this function and the evaluate_image_boxes() function, Image.open() cannot load the original image, so no files are saved. The assertion checked for images which were created only if root_dir was provided. As a result, the test was failing after the removal of root_dir.