chore(starknet_integration_tests): remove task_executor #8168

Job	Run time
executable-run	12m 0s
executable-run-no-rpc	12m 2s
integration-test	26m 12s
build-papyrus-utilities-image	25s
random-table-test	1m 47s
test-no-rpc	5m 13s
	57m 39s

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