chore: remove redundant flynt pre-commit hook #7526

Job	Run time
integration-test-gcs	1m 16s
integration-test	10m 41s
lint-and-unit-test (3.11)	2m 43s
integration-test-adls	1m 28s
lint-and-unit-test (3.13)	3m 2s
integration-test-s3	1m 14s
lint-and-unit-test (3.10)	2m 58s
lint-and-unit-test (3.12)	2m 57s
integration-coverage-report	39s
	26m 58s

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