Revert "Port obmc to python3.5"

Parse error with this change:
TypeError: iter() returned non-iterator of type 'PathTreeItemIterator'

This reverts commit f99783be6592130bbad2d0f69ada2b7ac61618f3.

Change-Id: Id2b7f4af5284d25d59e19905c7b873726b02f700
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/obmc/sensors.py b/obmc/sensors.py
index 3fd76b2..fba7a91 100644
--- a/obmc/sensors.py
+++ b/obmc/sensors.py
@@ -91,7 +91,7 @@
     @dbus.service.method(
         SensorValue.IFACE_NAME, in_signature='v', out_signature='')
     def setValue(self, value):
-        print("Setting boot count to " + str(value))
+        print "Setting boot count to " + str(value)
         SensorValue.setValue(self, value)
 
 
@@ -121,7 +121,7 @@
     @dbus.service.method(
         SensorValue.IFACE_NAME, in_signature='v', out_signature='')
     def setValue(self, value):
-        print("Setting Power Supply Derating is not allowed")
+        print "Setting Power Supply Derating is not allowed"
 
 
 class TurboAllowedSensor(VirtualSensor):