clean up comments #1352

Job	Run time
clang-sanitizers (,thread)	12m 44s
linux-shared-libs	12m 0s
windows-shared-libs	12m 52s
windows	13m 18s
clang-sanitizers (,address,undefined)	13m 53s
windows-vc17 (x64)	13m 3s
macos (kqueue)	10m 52s
macos-x64	16m 50s
downstream	19m 1s
windows-app-verifier	15m 2s
linux-compat (opensuse-leap)	13m 7s
linux-compat (al2-x64)	12m 0s
linux-compat (fedora-34-x64)	11m 21s
windows-vc17 (x86)	12m 50s
linux-compat (manylinux2014-x86)	12m 11s
linux-compat (rhel8-x64)	11m 53s
linux-compat (manylinux1-x86)	12m 6s
linux-compat (manylinux1-x64)	21m 14s
linux-compiler-compat (clang-17)	13m 50s
linux-compiler-compat (clang-8)	19m 18s
linux-compiler-compat (gcc-7)	11m 54s
linux-compiler-compat (clang-10)	12m 45s
linux-compiler-compat (gcc-5)	19m 18s
macos (dispatch_queue)	14m 40s
linux-compiler-compat (clang-6)	13m 1s
linux-compiler-compat (clang-11)	12m 46s
linux-compiler-compat (clang-9)	12m 51s
linux-compat (manylinux2014-x64)	13m 45s
linux-compiler-compat (gcc-11)	13m 43s
linux-compiler-compat (clang-15)	21m 51s
linux-compiler-compat (gcc-6)	12m 3s
linux-compiler-compat (gcc-8)	12m 29s
linux-compiler-compat (gcc-4.8)	11m 32s
	7h 42m 3s

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