Remove FMT_USE_USER_LITERALS #7352

Job	Run time
mingw (mingw64)	5m 2s
mingw (ucrt64)	4m 13s
build (windows-2019, Win32, v142, 17, Debug)	1m 23s
build (windows-2019, Win32, v142, 17, Release)	2m 48s
build (windows-2019, Win32, v142, 17, -DBUILD_SHARED_LIBS=ON, Debug)	1m 28s
build (windows-2019, Win32, v142, 17, -DBUILD_SHARED_LIBS=ON, Release)	1m 57s
build (windows-2019, x64, v141, 14, Debug)	1m 55s
build (windows-2019, x64, v141, 14, Release)	2m 8s
build (windows-2019, x64, v141, 17, Debug)	1m 19s
build (windows-2019, x64, v141, 17, Release)	3m 31s
build (windows-2019, x64, v142, 17, Debug)	1m 17s
build (windows-2019, x64, v142, 17, Release)	2m 47s
build (windows-2019, x64, v142, 17, -DBUILD_SHARED_LIBS=ON, Debug)	1m 50s
build (windows-2019, x64, v142, 17, -DBUILD_SHARED_LIBS=ON, Release)	2m 40s
build (windows-2019, x64, v142, 20, Debug)	1m 40s
build (windows-2019, x64, v142, 20, Release)	2m 43s
build (windows-2022, x64, v143, Debug, 20)	2m 34s
	41m 15s

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