tests.cc-wrapper.supported: remove obsolete Darwin conditionals (#351535)

      builtGCC =

        let

          inherit (lib) filterAttrs;

          sets = lib.pipe gccTests ([

          sets = lib.pipe gccTests [

            (filterAttrs (_: v: lib.meta.availableOn stdenv.hostPlatform v.stdenv.cc))

            # Broken

            (filterAttrs (n: _: n != "gccMultiStdenv"))

          ] ++ lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) [

            # fails with things like

            # ld: warning: ld: warning: object file (trunctfsf2_s.o) was built for newer macOS version (11.0) than being linked (10.5)

            # ld: warning: ld: warning: could not create compact unwind for ___fixunstfdi: register 20 saved somewhere other than in frame

            (filterAttrs (n: _: n != "gcc11Stdenv"))

          ]);

          ];

        in

        toJSON sets;

      builtLLVM =

        let

          inherit (lib) filterAttrs;

          sets = lib.pipe llvmTests ([

          sets = lib.pipe llvmTests [

            (filterAttrs (_: v: lib.meta.availableOn stdenv.hostPlatform v.clang.stdenv.cc))

            (filterAttrs (_: v: lib.meta.availableOn stdenv.hostPlatform v.libcxx.stdenv.cc))

            # libcxxStdenv broken

            # fix in https://github.com/NixOS/nixpkgs/pull/216273

          ] ++ lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) [

            (filterAttrs (n: _: n != "llvmPackages_9"))

          ]);

          ];

        in

        toJSON sets;

        buildCommand = ''