Deletes deprecated field and updates comment for data source url. (#6… #11721

Job	Run time
lint-misc	16s
build-data-server-pip (native, ubuntu-20.04, 1.65.0)	1m 9s
lint-frontend	1m 19s
build-data-server-pip (native, macos-13, 1.65.0)	1m 41s
build-data-server-pip (universal, ubuntu-20.04, 1.65.0)	8s
lint-python-flake8 (3.9)	15s
lint-python-yaml-docs	22s
lint-python-flake8 (3.10)	14s
lint-rust (1.65.0, 0.16.1)	30s
lint-python-flake8 (3.11)	9s
build (tf, 3.9)	25m 59s
build (notf, 3.9)	21m 59s
	54m 1s

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