Remove mac build #113

Job	Run time
core-cargo-test / core-cargo-test (windows-latest, x86_64-pc-windows-msvc)	4m 10s
workspace-check / workspace-check	2m 24s
core-cargo-test / core-cargo-test (ubuntu-latest, x86_64-unknown-linux-gnu)	1m 30s
dashboard-build-and-draft / dashboard-build-and-draft (windows-latest, x86_64-pc-windows-msvc)	14m 38s
dashboard-build-and-draft / dashboard-build-and-draft (ubuntu-latest, x86_64-unknown-linux-gnu)	7m 48s
core-build-and-draft / core-build-and-draft (windows-latest, x86_64-pc-windows-msvc, windows, x86_64, .exe, false)	10m 42s
core-build-and-draft / core-build-and-draft (ubuntu-latest, x86_64-unknown-linux-gnu, linux, x86_64, false)	3m 36s
core-build-and-draft / core-build-and-draft (self-hosted, aarch64-unknown-linux-gnu, linux, aarch64, false)	6m 4s
	50m 52s

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