CI: no need to try qemu and wasmtime on macOS builds

ci/azure/macos_script

@@ -59,7 +59,7 @@ set +x
 LOG=$(mktemp)
 for step in test-toolchain test-std docs; do
   echo "* Running step: [$step]"
-  if ! release/bin/zig build $step -Denable-qemu -Denable-wasmtime 2>"$LOG" >&2; then
+  if ! release/bin/zig build $step 2>"$LOG" >&2; then
     cat "$LOG" >&2
     exit 1
   fi