tests: Don't create tests/result

https://hydra.nixos.org/log/lns780srkka4dv7r69mn4zfy6fdij4yr-nix-2.9.0pre20220428_4bb111c.drv

tests/build-remote.sh

@@ -34,7 +34,7 @@ outPath=$(readlink -f $TEST_ROOT/result)
 
 grep 'FOO BAR BAZ' $TEST_ROOT/machine0/$outPath
 
-testPrintOutPath=$(nix build -L -v -f $file --print-out-paths --max-jobs 0 \
+testPrintOutPath=$(nix build -L -v -f $file --no-link --print-out-paths --max-jobs 0 \
   --arg busybox $busybox \
   --store $TEST_ROOT/machine0 \
   --builders "$(join_by '; ' "${builders[@]}")"
@@ -72,6 +72,7 @@ fi
 
 # Behavior of keep-failed
 out="$(nix-build 2>&1 failing.nix \
+  --no-out-link \
   --builders "$(join_by '; ' "${builders[@]}")"  \
   --keep-failed \
   --store $TEST_ROOT/machine0 \