Remove unused root property from ConfigurationOption (fixes #874) #1192

Job	Run time
Run tests on legacy versions (3.7)	2m 11s
Run tests (3.8)	2m 7s
Run tests (3.10)	2m 1s
Run tests (3.9)	2m 5s
Run tests (3.12)	2m 12s
Run tests with different pydantic versions	3m 43s
Run tests (3.13)	2m 8s
Run tests with coverage	3m 1s
Run linters (pydocstyle)	1m 55s
Run linters (pylint)	1m 42s
Run linters (mypy)	1m 53s
Run linters (flake8)	1m 44s
Run tests (3.11)	2m 1s
Run tests with coverage	3m 0s
Run tests (3.13)	2m 8s
Run tests (3.8)	2m 7s
Run tests (3.9)	2m 5s
Run linters (flake8)	1m 44s
Run linters (mypy)	1m 53s
Run tests with different pydantic versions	3m 43s
Run tests (3.10)	2m 1s
Run tests (3.11)	2m 1s
Run linters (pydocstyle)	1m 55s
Run linters (pylint)	1m 42s
Run tests on legacy versions (3.7)	2m 11s
Run tests (3.12)	2m 12s
	57m 25s

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