Resolve "remove tmp_dir_obj because not use memmap anymore"

Closes #135 (closed)

sohstationviewer/model/general_data/general_data.py

 from __future__ import annotations
 import os
 from pathlib import Path
-from tempfile import TemporaryDirectory
 from typing import Optional, Union, List, Tuple, Dict
 import traceback
 
@@ -14,7 +13,6 @@ from sohstationviewer.controller.util import \
     display_tracking_info, get_valid_file_count, validate_file, validate_dir
 from sohstationviewer.view.plotting.gps_plot.gps_point import GPSPoint
 from sohstationviewer.view.util.enums import LogType
-from sohstationviewer.database.process_db import execute_db
 from sohstationviewer.model.general_data.general_data_helper import \
     retrieve_data_time_from_data_dict, retrieve_gaps_from_data_dict, \
     combine_data, sort_data, squash_gaps, apply_convert_factor_to_data_dict, \
@@ -148,14 +146,6 @@ class GeneralData():
         """
         self.gaps: Dict[DataKey, List[List[float]]] = {}
 
-        """
-         tmp_dir: dir to keep memmap files. Deleted when object is deleted
-        """
-        self.tmp_dir_obj: TemporaryDirectory = TemporaryDirectory()
-        self.tmp_dir = self.tmp_dir_obj.name
-        if not on_unittest:
-            self.save_temp_data_folder_to_database()
-
         self._pauser = QtCore.QSemaphore()
         self.pause_response = None
 
@@ -279,17 +269,6 @@ class GeneralData():
         self.selected_key = self.keys[ret]
         return True
 
-    def __del__(self):
-        print("delete dataType Object")
-        try:
-            del self.tmp_dir_obj
-        except OSError as e:
-            self.track_info(
-                "Error deleting %s : %s" % (self.tmp_dir, e.strerror),
-                LogType.ERROR)
-            print("Error deleting %s : %s" % (self.tmp_dir, e.strerror))
-        print("finish deleting")
-
     def track_info(self, text: str, type: LogType) -> None:
         """
         Display tracking info in tracking_box.
@@ -361,10 +340,6 @@ class GeneralData():
         """
         return cls.__new__(cls)
 
-    def save_temp_data_folder_to_database(self):
-        execute_db(f'UPDATE PersistentData SET FieldValue="{self.tmp_dir}" '
-                   f'WHERE FieldName="tempDataDirectory"')
-
     def sort_all_data(self):
         """
         Sort traces by startTmEpoch on all data: waveform_data, mass_pos_data,