fix compile warning when meson build

- Fix compile warning:
  [-Werror=unused-variable], [-Werror=sign-compare] and
  deprecated INSTANTIATE_TEST_CASE_P

Signed-off-by: Harvey.Wu <Harvey.Wu@quantatw.com>
Change-Id: If8713f0b938cd5306bbe19a9078731db0c3667dc
diff --git a/experiments/drive.cpp b/experiments/drive.cpp
index 5fdbcf4..15ce05a 100644
--- a/experiments/drive.cpp
+++ b/experiments/drive.cpp
@@ -130,7 +130,8 @@
     return;
 }
 
-static void driveTime(int64_t& seriesCnt, int64_t setPwm, int64_t goal,
+static void driveTime([[maybe_unused]] int64_t& seriesCnt, int64_t setPwm,
+                      [[maybe_unused]] int64_t goal,
                       std::vector<std::tuple<tstamp, int64_t, int64_t>>& series,
                       std::vector<std::unique_ptr<Sensor>>& fanSensors)
 {