boot-performance: Remove the --no-lava argument

--no-lava is used because the test step was adding ':pass' at the end of
each line.
This was then parsed by the `parse: pattern:` line.

The test is only printing values (nothing is actually checked) so there
is no need to add the `:pass`, just let `run-test-in-systemd` report the
status of the command to LAVA.

Signed-off-by: Detlev Casanova <detlev.casanova@collabora.com>

test-cases/boot-performance.yaml

@@ -88,5 +88,5 @@ run:
   steps:
     - "# Enter test directory:"
     - cd boot-performance-automated
-    - "common/run-test-in-systemd --timeout=900 --no-lava --name=boot-performance-automated sh -c './run-test.sh | sed \"/^(.*/ s/\\$/ :pass/\"'"
+    - common/run-test-in-systemd --timeout=900 --name=boot-performance-automated ./run-test.sh