monitor: Remove getService

Remove getService from tach_sensor as it is no longer used.

Change-Id: I568afb502379e05e85685d279033ab198c3cc91f
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/monitor/tach_sensor.cpp b/monitor/tach_sensor.cpp
index bcdde0f..0ec52ba 100644
--- a/monitor/tach_sensor.cpp
+++ b/monitor/tach_sensor.cpp
@@ -26,7 +26,6 @@
 namespace monitor
 {
 
-constexpr auto PROPERTY_INTF = "org.freedesktop.DBus.Properties";
 constexpr auto FAN_SENSOR_PATH = "/xyz/openbmc_project/sensors/fan_tach/";
 constexpr auto FAN_SENSOR_CONTROL_INTF = "xyz.openbmc_project.Control.FanSpeed";
 constexpr auto FAN_SENSOR_VALUE_INTF = "xyz.openbmc_project.Sensor.Value";
@@ -115,17 +114,6 @@
 }
 
 
-//Can cache this value after openbmc/openbmc#1496 is resolved
-std::string TachSensor::getService()
-{
-    // Use the Value interface since not all sensors implement
-    // the control interface.
-    return phosphor::fan::util::getService(_name,
-                                           FAN_SENSOR_VALUE_INTF,
-                                           _bus);
-}
-
-
 std::string TachSensor::getMatchString(const std::string& interface)
 {
     return std::string("type='signal',"
diff --git a/monitor/tach_sensor.hpp b/monitor/tach_sensor.hpp
index d564f73..fbda37b 100644
--- a/monitor/tach_sensor.hpp
+++ b/monitor/tach_sensor.hpp
@@ -122,11 +122,6 @@
     private:
 
         /**
-         * @brief Returns the service name for reading the sensor
-         */
-        std::string getService();
-
-        /**
          * @brief Returns the match string to use for matching
          *        on a properties changed signal.
          */