scripts/make: ignore unitTests warns if legacy #2479

Job	Run time
macOS--dotnet6-and-mono	7m 9s
windows--dotnet6	6m 43s
windows--legacyFramework	2m 5s
macOS--mono	29s
linux22-github	4m 54s
linux22-github--newmono	4m 35s
linux22-vanilla--stockdotnet6	6m 0s
linux22-vanilla--newmono	2m 42s
linux22-vanilla--stockdotnet6-and-newmono	7m 20s
linux22-vanilla--stockdotnet6-and-stockmono	5m 23s
linux22-vanilla--stockmono	1m 4s
linux20-github	4m 55s
linux20-github--newmono	5m 26s
linux20-vanilla--newmono	2m 50s
linux20-vanilla--stockmono	1m 41s
conventions	0s
snap_pkg	0s
	1h 3m 16s

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