Removed osdp-diff folder, replaced print() with log.debug(); updated test cases

Author: ryanhz

osdp-diff/_bus_diff.txt

@@ -130,8 +130,7 @@ def process_reply(self, reply: Reply, device: Device):
 			device.initialize_secure_channel(reply)
 		elif reply.type == ReplyType.InitialRMac:
 			if device.validate_secure_channel_establishment(reply):
-				print("Secure session established.")
-				
+				log.debug("Secure session established.")
 
 		if self._on_reply_received is not None:
 			self._on_reply_received(reply)