phosphor-hwmon: Disable building tests

We don't yet support turning on ptest so we are wasting cycles building
them.

Change-Id: Ica6d2f7f6b99900889c1ff8b69073677c1f65f81
Signed-off-by: William A. Kennington III <wak@google.com>
diff --git a/meta-phosphor/recipes-phosphor/sensors/phosphor-hwmon_git.bb b/meta-phosphor/recipes-phosphor/sensors/phosphor-hwmon_git.bb
index 7d88cc6..d81b1d7 100644
--- a/meta-phosphor/recipes-phosphor/sensors/phosphor-hwmon_git.bb
+++ b/meta-phosphor/recipes-phosphor/sensors/phosphor-hwmon_git.bb
@@ -28,6 +28,8 @@
         cli11 \
         "
 
+EXTRA_OEMESON += "-Dtests=disabled"
+
 FILES_${PN} += "${base_libdir}/systemd/system/xyz.openbmc_project.Hwmon@.service"
 RDEPENDS_${PN} += "\
         bash \