Remove OCC EREMOTEIO return code hack

With openbmc/openbmc#2329, an OCC sensor value will not be read when the
associated fault file is set to true. This will set the value to 0 when
a sensor is faulted at startup or not update the previous value during
the monitoring loop if the OCC sensor becomes faulted.

Applications(i.e. fan control) needing to react to a faulted OCC sensor
can subscribe to property changed signals on the OperationalStatus
Functional property for the sensor's dbus object.

Tested:
    A faulted OCC sensor has a non-functional status on dbus

Change-Id: Ia43ebb1e0fe0227797bc4034e617ac357edd348d
Signed-off-by: Matthew Barth <msbarth@us.ibm.com>
diff --git a/hwmonio.hpp b/hwmonio.hpp
index b254b0f..619d6ad 100644
--- a/hwmonio.hpp
+++ b/hwmonio.hpp
@@ -57,8 +57,7 @@
                 const std::string& id,
                 const std::string& sensor,
                 size_t retries,
-                std::chrono::milliseconds delay,
-                bool isOCC = false) const;
+                std::chrono::milliseconds delay) const;
 
         /** @brief Perform formatted hwmon sysfs write.
          *