dbushelper: drop obsolete parameter from interface

Signed-off-by: Patrick Venture <venture@google.com>
Change-Id: Idebae41e021f54c3670cc22aa6c784549a361c23
diff --git a/dbus/dbusconfiguration.cpp b/dbus/dbusconfiguration.cpp
index 341a204..bcdea89 100644
--- a/dbus/dbusconfiguration.cpp
+++ b/dbus/dbusconfiguration.cpp
@@ -392,12 +392,12 @@
         const std::string& path = sensorConfig[info.inputs.front()].readPath;
 
         DbusHelper helper(sdbusplus::bus::new_system());
-        std::string service = helper.getService(bus, interface, path);
+        std::string service = helper.getService(interface, path);
         double reading = 0;
         try
         {
-            helper.getProperty(bus, service, path, interface,
-                               *thresholdProperty, reading);
+            helper.getProperty(service, path, interface, *thresholdProperty,
+                               reading);
         }
         catch (const sdbusplus::exception::SdBusError& ex)
         {