refactor: remove useless cast #438

Job	Run time
checks	50s
coverage	2m 30s
sanitize	7m 23s
memcheck	4m 45s
size-test	30s
size-test-embedded (ci-size-coverage-embedded)	53s
size-test-embedded (ci-size-coverage-embedded-nano)	1m 21s
unit-tests (gcc-11, Debug)	5m 56s
unit-tests (gcc-11, Release)	2m 33s
unit-tests (gcc-12, Debug)	6m 28s
unit-tests (gcc-12, Release)	3m 54s
unit-tests (gcc-13, Debug)	3m 40s
unit-tests (gcc-13, Release)	3m 54s
unit-tests (clang-16, Debug)	4m 7s
unit-tests (clang-16, Release)	3m 39s
unit-tests (clang-17, Debug)	5m 8s
unit-tests (clang-17, Release)	4m 57s
	1h 2m 28s

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