give up macOS debug build with xmake #3364

Job	Run time
Ubuntu / Release / gcc	24m 52s
macOS / Release / homebrew-clang	7m 0s
Ubuntu / Debug / gcc	18m 25s
Windows / Release / cl	27m 22s
macOS / Debug / homebrew-clang	6m 25s
Ubuntu / Release / clang	17m 49s
Windows / Release / clang	27m 24s
macOS / Release / system-clang	7m 11s
Windows / Release / clang-cl	25m 21s
Ubuntu / Debug / clang	13m 53s
macOS / Debug / system-clang	5m 49s
Windows / Debug / cl	18m 53s
Windows / Debug / clang	19m 46s
Windows / Debug / clang-cl	24m 56s
	4h 5m 6s

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