remove calling for populate_data_stream() with is to create empty event DS but...

remove calling for populate_data_stream() with is to create empty event DS but actually is not going to be called is data not exist

sohstationviewer/model/reftek/reftek.py

@@ -196,7 +196,6 @@ class RT130(DataTypeModel):
         self.populate_cur_key_for_all_data(cur_key)
         if data_stream != 9:
             # don't get event info for mass position
-            self.populate_data_stream(cur_key, str(data_stream))
             self.get_ehet_in_log_data(rt130, cur_key)
         self.get_mass_pos_data_and_waveform_data(rt130, data_stream, cur_key)