made list clear python 3.2- compatible

Author: jbize

netsnmpagent.py

@@ -952,7 +952,8 @@ def send_queued_traps(self):
 			for arg_tuple in self.queued_traps:
 				(args, kwargs) = arg_tuple
 				self.send_trap(*args, **kwargs)
-			self.queued_traps.clear()  # Python 3.3+
+# 			self.queued_traps.clear()  # Python 3.3+
+			del self.queued_traps[:]  # more universal
 # 			self.queued_traps *= 0
 
 	def send_trap(self, *args, **kwargs):