Remove init in legacy/data.py #5472

Job	Run time
Dependency	6s
Prepare	57s
Shellcheck	6s
Ruff check and force	14s
Check commit	37s
Create pytest cache for Python 3.13.0	21s
Create pytest cache for Python 3.12	14s
Run pytest using Python 3.13.0	20s
Run pytest using Python 3.12	15s
Process test coverage	19s
Run mypy	24s
Process test complexity	15s
Build and publish Python 🐍 distributions 📦 to TestPyPI	28s
	4m 36s

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