fix(confluent-kafka): Removed non relevant argument in poll

Author: javferrod

instrumentation/opentelemetry-instrumentation-confluent-kafka/tests/test_instrumentation.py

@@ -176,10 +176,10 @@ def test_poll(self) -> None:
         )
         span_list = self.memory_exporter.clear()
         consumer = instrumentation.instrument_consumer(consumer)
-        consumer.poll(1)
-        consumer.poll(1)
-        consumer.poll(1)
-        consumer.poll(1)
+        consumer.poll()
+        consumer.poll()
+        consumer.poll()
+        consumer.poll()
 
         span_list = self.memory_exporter.get_finished_spans()
         self._compare_spans(span_list, expected_spans)