remove unused header files #39

Job	Run time
macOS / Release / homebrew-clang	6m 44s
Release / ubuntu-24.04-arm / aarch64 / gcc	26m 21s
Windows / Release / cl	38m 2s
macOS / Debug / homebrew-clang	7m 16s
Debug / ubuntu-24.04-arm / aarch64 / gcc	23m 16s
Windows / Release / clang	37m 18s
macOS / Release / system-clang	7m 27s
Release / ubuntu-24.04-arm / aarch64 / clang	19m 29s
macOS / Debug / system-clang	5m 54s
Windows / Release / clang-cl	26m 55s
Debug / ubuntu-24.04-arm / aarch64 / clang	16m 45s
Windows / Debug / cl	25m 25s
Windows / Debug / clang	31m 25s
Windows / Debug / clang-cl	24m 47s
	4h 57m 4s

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