[FIX] date_range: Remove useless post_install flag for tests

date_range/tests/test_date_range.py

@@ -8,8 +8,6 @@ from odoo.tests.common import TransactionCase
 
 
 class DateRangeTest(TransactionCase):
-    post_install = True
-    at_install = False
 
     def setUp(self):
         super(DateRangeTest, self).setUp()

date_range/tests/test_date_range_generator.py

@@ -10,8 +10,6 @@ from odoo.tests.common import TransactionCase
 
 
 class DateRangeGeneratorTest(TransactionCase):
-    post_install = True
-    at_install = False
 
     def setUp(self):
         super(DateRangeGeneratorTest, self).setUp()

date_range/tests/test_date_range_type.py

@@ -9,8 +9,6 @@ from odoo.tools import mute_logger
 
 
 class DateRangeTypeTest(TransactionCase):
-    post_install = True
-    at_install = False
 
     def setUp(self):
         super(DateRangeTypeTest, self).setUp()