Remove empty __init__.py files

[wjbmattingly]

Description

Remove unnecessary empty __init__.py files from the codebase. These files were required in Python 2 to mark directories as packages but are optional in Python 3.3+ and add unnecessary clutter to our codebase.

Tasks

• Scan codebase for empty __init__.py files
• Remove identified empty files

Technical Details

• Target: Empty __init__.py files only
• Keep files containing actual code/imports
• Python 3.3+ implicit namespace packages will handle directory marking

Testing

• Run full test suite after removal
• Verify package imports work in development environment
• Check build process completes successfully