Apple: Remove redundant flags #1975

Job	Run time
Test wasm32-wasip1-thread	1m 22s
Test build-std (aarch64-tvos)	1m 43s
Test build-std (aarch64-tvos-sim)	1m 50s
Clippy	12s
Test build-std (x86_64-tvos)	1m 46s
MSRV (ubuntu-latest)	20s
Test wasm (wasm32-unknown-unknown)	14s
Rustfmt	15s
MSRV (windows-latest)	39s
semver-checks	2m 26s
MSRV (macos-latest)	30s
Test CUDA support	27s
Test (stable)	1m 27s
Test (beta)	1m 17s
Test (nightly)	1m 14s
Test (linux32)	1m 58s
Test (macos)	3m 7s
Test (aarch64-macos)	1m 43s
Test (aarch64-ios)	47s
Test (win32)	1m 55s
Test (win64)	2m 37s
Test (mingw32)	2m 44s
Test (mingw64)	2m 42s
Test (windows-2019)	2m 48s
Test (windows-aarch64, windows-latest, stable, aarch64-pc-windows-msvc, --no-run)	3m 28s
Test (windows-clang, windows-2019, stable, x86_64-pc-windows-msvc, clang, clang++)	4m 0s
Test (windows-clang-cl, windows-2019, stable, x86_64-pc-windows-msvc, clang-cl, clang-cl)	2m 21s
	45m 52s

Provide feedback