Update TestPortalTypeClass.testBoundMethodCaching WRT r40640

Since r40640, portal type classes are reinitialized at the end of transaction,
but the test is still valid in multithreaded setups, where classes may be
ghostified at any moment by another thread.

testBoundMethodCaching and testClassHierarchyAfterReset somehow test the same
thing, but in different ways.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@41204 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5Type/tests/testDynamicClassGeneration.py

@@ -187,8 +187,7 @@ class TestPortalTypeClass(ERP5TypeTestCase):
     Or do we need to reset the fewest classes as possible ?
     """
     newDocument = self.portal.newContent(self.id(), 'Folder').newContent
-    self.portal.portal_types.newContent(portal_type='Base Type',
-                                        type_class='Folder')
+    self.portal.portal_types.resetDynamicDocuments()
     newDocument(portal_type='Folder')
 
   def testPropertyGenerationOnTempPortalType(self):