Remove some redundant `const`s and `inline`s #8236

Job	Run time
mingw (mingw64)	4m 11s
mingw (ucrt64)	5m 10s
build (windows-2019, Win32, v142, 17, -DBUILD_SHARED_LIBS=ON, Release)	2m 31s
build (windows-2019, x64, v142, 17, Release)	2m 21s
build (windows-2019, x64, v141, 17, Debug)	1m 21s
build (windows-2019, Win32, v142, 17, Debug)	1m 15s
build (windows-2019, x64, v141, 14, Debug)	2m 7s
build (windows-2019, x64, v142, 20, Release)	3m 10s
build (windows-2019, x64, v141, 17, Release)	2m 20s
build (windows-2019, Win32, v142, 17, -DBUILD_SHARED_LIBS=ON, Debug)	1m 11s
build (windows-2019, x64, v141, 14, Release)	2m 4s
build (windows-2019, Win32, v142, 17, Release)	2m 7s
build (windows-2022, x64, v143, Debug, 20)	2m 27s
build (windows-2019, x64, v142, 17, -DBUILD_SHARED_LIBS=ON, Release)	2m 10s
build (windows-2019, x64, v142, 20, Debug)	1m 34s
build (windows-2019, x64, v142, 17, -DBUILD_SHARED_LIBS=ON, Debug)	1m 18s
build (windows-2019, x64, v142, 17, Debug)	1m 23s
	38m 40s

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