Fix import error in tibit_onu

Change-Id: I973d23049e5be86290681e546c8b4f37760e09a1
diff --git a/voltha/adapters/tibit_onu/tibit_onu.py b/voltha/adapters/tibit_onu/tibit_onu.py
index 10b9d9c..4af7be3 100644
--- a/voltha/adapters/tibit_onu/tibit_onu.py
+++ b/voltha/adapters/tibit_onu/tibit_onu.py
@@ -53,7 +53,7 @@
 
 from EOAM_TLV import AddStaticMacAddress, DeleteStaticMacAddress
 from EOAM_TLV import ClearStaticMacTable
-from EOAM import EOAMPayload, EoamPayload, CablelabsOUI, DPoEOpcode_GetRequest
+from EOAM import EoamPayload, CablelabsOUI, DPoEOpcode_GetRequest
 
 
 # To be removed in favor of OAM