Make PowerSupplyRedundancy writeable.

Power Supply redundancy is read only, based on the
requirement for customers to set it, enabling set value
on this sensor.

Change-Id: I1f2d5e892c0d729fe3f541a2d8c981b4bd678d60
Signed-off-by: Dhruvaraj Subhashchandran <dhruvaraj@in.ibm.com>
diff --git a/obmc/sensors.py b/obmc/sensors.py
index 5700922..fba7a91 100644
--- a/obmc/sensors.py
+++ b/obmc/sensors.py
@@ -110,14 +110,7 @@
 class PowerSupplyRedundancySensor(VirtualSensor):
     def __init__(self, bus, name):
         VirtualSensor.__init__(self, bus, name)
-        super(PowerSupplyRedundancySensor, self).setValue("Enabled")
-
-    ## override setValue method
-    @dbus.service.method(
-        SensorValue.IFACE_NAME, in_signature='v', out_signature='')
-    def setValue(self, value):
-        print "Setting Power Supply Redundancy is not allowed"
-
+        self.setValue("Enabled")
 
 class PowerSupplyDeratingSensor(VirtualSensor):
     def __init__(self, bus, name):