Don't call XmpParser.initialize

It gets called automatically when Xmp data is loaded. This happens in
other test modules, so when test_properties is run it might already be
initialised. Calling it a second time can cause segfaults!

Author: jim-easterbrook

tests/test_properties.py

@@ -1,6 +1,6 @@
 ##  python-exiv2 - Python interface to libexiv2
 ##  http://github.com/jim-easterbrook/python-exiv2
-##  Copyright (C) 2023-24  Jim Easterbrook  [email protected]
+##  Copyright (C) 2023-25  Jim Easterbrook  [email protected]
 ##
 ##  This program is free software: you can redistribute it and/or
 ##  modify it under the terms of the GNU General Public License as
@@ -31,14 +31,6 @@ class TestPropertiesModule(unittest.TestCase):
     prefix_name = 'dc'
     property_name = 'description'
 
-    @classmethod
-    def setUpClass(cls):
-        exiv2.XmpParser.initialize()
-
-    @classmethod
-    def tearDownClass(cls):
-        exiv2.XmpParser.terminate()
-
     def check_result(self, result, expected_type, expected_value):
         self.assertIsInstance(result, expected_type)
         self.assertEqual(result, expected_value)