Removal os string #214

Job	Run time
arm (arm32v7)	4m 1s
arm (arm64v8)	3m 20s
i386	4m 37s
darwin_arm (self-hosted, macOS, ARM64, 8.10.7)	1s
darwin_arm (self-hosted, macOS, ARM64, 9.2.6)	1s
build (ubuntu-latest, 8.0.2, 3.8.1.0)	12m 40s
darwin_arm (self-hosted, macOS, ARM64, 9.4.4)	1s
build (ubuntu-latest, 8.2.2, 3.8.1.0)	6m 51s
build (ubuntu-latest, 8.4.4, 3.8.1.0)	5m 37s
build (ubuntu-latest, 8.6.5, 3.8.1.0)	5m 16s
build (ubuntu-latest, 8.8.4, 3.8.1.0)	5m 52s
build (ubuntu-latest, 8.10.7, 3.8.1.0)	5m 40s
build (ubuntu-latest, 9.0.2, 3.8.1.0)	5m 11s
build (ubuntu-latest, 9.2.7, 3.8.1.0)	4m 15s
build (ubuntu-latest, 9.4.5, 3.8.1.0)	4m 8s
build (ubuntu-latest, 9.6.1, 3.8.1.0)	4m 57s
build (macOS-latest, 9.4.5, 3.8.1.0)	13m 25s
build (macOS-latest, 9.6.1, 3.8.1.0)	13m 44s
build (windows-latest, 9.4.5, 3.8.1.0)	15m 38s
build (windows-latest, 9.6.1, 3.8.1.0)	15m 7s
	2h 10m 22s

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