Update openvino_launcher.py

Author: pwolnows

tools/accuracy_checker/accuracy_checker/launcher/openvino_launcher.py

@@ -117,7 +117,7 @@ def __init__(self, config_entry, model_name='', delayed_model_loading=False,
             self._configure_lstm_inputs()
         self.reset_memory_state = self.get_value_from_config('reset_memory_state')
         self._dump_first_infer_data = self.config.get('_dump_first_infer_data', None)
-        if self._dump_first_infer_data is not None:
+        if self._dump_first_infer_data:
             self.async_mode = False
 
     @classmethod