Simplify `ReadFromTFDS`. #10417

Job	Run time
Check whether we should run tests or not	11s
Github API tests	2m 55s
Notebook tests	6m 44s
HuggingFace Python 3.10 tests	2m 19s
Core TFDS tests / Generate shards	1s
Core TFDS tests / [Python 3.10][1/4]	5m 9s
Core TFDS tests / [Python 3.11][1/4]	5m 7s
Core TFDS tests / [Python 3.12][1/4]	6m 4s
Core TFDS tests / [Python 3.10][2/4]	5m 1s
Core TFDS tests / [Python 3.11][2/4]	4m 51s
Core TFDS tests / [Python 3.12][2/4]	5m 38s
Core TFDS tests / [Python 3.10][3/4]	4m 55s
Core TFDS tests / [Python 3.11][3/4]	5m 35s
Core TFDS tests / [Python 3.12][3/4]	5m 43s
Core TFDS tests / [Python 3.10][4/4]	4m 58s
Core TFDS tests / [Python 3.11][4/4]	4m 54s
Core TFDS tests / [Python 3.12][4/4]	5m 53s
	1h 15m 58s

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