Remove step in GitHub actions. #10288

Job	Run time
Check whether we should run tests or not	12s
Notebook tests	6m 29s
HuggingFace Python 3.10 tests	2m 22s
Github API tests	2m 7s
Core TFDS tests / Generate shards	1s
Core TFDS tests / [Python 3.10][1/4]	5m 17s
Core TFDS tests / [Python 3.11][1/4]	5m 14s
Core TFDS tests / [Python 3.12][1/4]	6m 30s
Core TFDS tests / [Python 3.10][2/4]	4m 31s
Core TFDS tests / [Python 3.11][2/4]	4m 23s
Core TFDS tests / [Python 3.12][2/4]	5m 51s
Core TFDS tests / [Python 3.10][3/4]	4m 48s
Core TFDS tests / [Python 3.11][3/4]	5m 23s
Core TFDS tests / [Python 3.12][3/4]	5m 51s
Core TFDS tests / [Python 3.10][4/4]	4m 49s
Core TFDS tests / [Python 3.11][4/4]	4m 47s
Core TFDS tests / [Python 3.12][4/4]	6m 5s
	1h 14m 40s

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