chore(tests): remove databases specification

This is no longer needed since we no loger use multiple databases.

Author: nijel

weblate_web/payments/tests.py

@@ -190,8 +190,6 @@ def test_vat_calculation(self):
     FIO_TOKEN="test-token",  # noqa: S106
 )
 class BackendTest(TestCase):
-    databases = "__all__"
-
     def setUp(self):
         super().setUp()
         self.customer = Customer.objects.create(**CUSTOMER)

weblate_web/tests.py

@@ -440,7 +440,6 @@ def create_payment(*, recurring="y", user, **kwargs):
 
 
 class FakturaceTestCase(TestCase):
-    databases = "__all__"
     credentials = {
         "username": "testuser",
         "password": "testpassword",
@@ -829,8 +828,6 @@ def test_future(self):
 
 
 class APITest(TestCase):
-    databases = "__all__"
-
     def test_hosted(self):
         Package.objects.create(name="community", verbose="Community support", price=0)
         Package.objects.create(name="shared:test", verbose="Test package", price=0)