Misc changes to openolt_plaform

- Change MAX_ONUS_PER_PON to 128
- remove dependency of openolt_platform on resource_mgr
- remove unused logging

Change-Id: I96b10fd084eab67d78d8f495a35867c9e58fd816
diff --git a/voltha/adapters/openolt/openolt_device.py b/voltha/adapters/openolt/openolt_device.py
index c7fc9d9..cba09c3 100644
--- a/voltha/adapters/openolt/openolt_device.py
+++ b/voltha/adapters/openolt/openolt_device.py
@@ -179,7 +179,7 @@
                                                     self.host_and_port,
                                                     self.extra_args,
                                                     self.device_info)
-        self.platform = self.platform_class(self.log, self.resource_mgr)
+        self.platform = self.platform_class()
         self.flow_mgr = self.flow_mgr_class(self.adapter_agent, self.log,
                                             self.stub, self.device_id,
                                             self.logical_device_id,