erp5_catalog: Import `Folder` from ERP5Type.Core instead of OFS

This is the 1st step in moving ZSQLCatalog inside ERP5. Therefore,
we try to remove the dependencies on OFS one by one. Here. we change
this for Folder module and also reomved the monkeypatching of
getPath(which is being used in CopyContainer in CopySupport). The
reason for doing so is to imply using getPath from Base for CatalogTool
objects which was earlier directed to ZSQLCatalog as it use ZSQLCatalog
as one of its base class.

product/ZSQLCatalog/ZSQLCatalog.py

@@ -17,10 +17,10 @@ from App.special_dtml import DTMLFile
 from App.Dialogs import MessageDialog
 from App.class_init import default__class_init__ as InitializeClass
 
-from OFS.Folder import Folder
 from DateTime import DateTime
 from Acquisition import Implicit, aq_base
 from Persistence import Persistent
+from Products.ERP5Type.Core.Folder import Folder
 from DocumentTemplate.DT_Util import InstanceDict, TemplateDict
 from DocumentTemplate.DT_Util import Eval
 from AccessControl.Permission import name_trans
@@ -939,10 +939,6 @@ class ZCatalog(Folder, Persistent, Implicit):
         return record.path
       else:
         return None
-# Next line commented for now as we don't want this getpath function to be used
-# whenever a call is being made to any catalog object, instead we prefer using
-# the getPath from the base.
-  getPath = getpath
 
   security.declarePrivate('hasPath')
   def hasPath(self, path, sql_catalog_id=None):