[REM] core: deprecated TestCase classes

Part-of: odoo/odoo#98138

odoo/tests/common.py

@@ -868,16 +868,6 @@ class TransactionCase(BaseCase):
         self.patch(self.registry['res.partner'], '_get_gravatar_image', lambda *a: False)
 
 
-class SavepointCase(TransactionCase):
-    @classmethod
-    def __init_subclass__(cls):
-        super().__init_subclass__()
-        warnings.warn(
-            "Deprecated class SavepointCase has been merged into TransactionCase",
-            DeprecationWarning, stacklevel=2,
-        )
-
-
 class SingleTransactionCase(BaseCase):
     """ TestCase in which all test methods are run in the same transaction,
     the transaction is started with the first test method and rolled back at
@@ -1901,17 +1891,6 @@ class HttpCase(TransactionCase):
         return profiler.Nested(_profiler, patch('odoo.http.Request._get_profiler_context_manager', route_profiler))
 
 
-# kept for backward compatibility
-class HttpSavepointCase(HttpCase):
-    @classmethod
-    def __init_subclass__(cls):
-        super().__init_subclass__()
-        warnings.warn(
-            "Deprecated class HttpSavepointCase has been merged into HttpCase",
-            DeprecationWarning, stacklevel=2,
-        )
-
-
 def no_retry(arg):
     """Disable auto retry on decorated test method or test class"""
     arg._retry = False