tests: aarch64-outline-atomics: Remove hardcoded target
Since this test is limited to aarch64 and linux hosts, the `--target` flag is entirely unnecessary and only breaks this on musl hosts. Let the compiler use the default target instead.
Since this test is limited to aarch64 and linux hosts, the --target
flag is entirely unnecessary and only breaks this on musl hosts. Let the
compiler use the default target instead.
Signed-off-by: Jens Reidel <adrian@travitia.xyz>