removed interfaces

lib/python/Products/ZCatalog/Catalog.py

@@ -443,7 +443,7 @@ class Catalog(Persistent, Acquisition.Implicit, ExtensionClass.Base):
 
 
 ## Searching engine.  You don't really have to worry about what goes
-## on below here...
+## on below here...  Most of this stuff came from ZTables with tweaks.
 
     def _indexedSearch(self, args, sort_index, append, used,
                        IIBType=type(IIBucket()), intSType=type(intSet())):

lib/python/Products/ZCatalog/ZCatalog.py

@@ -102,7 +102,6 @@ from SearchIndex import UnIndex, UnTextIndex
 from Vocabulary import Vocabulary
 import IOBTree
 
-from ZCatalogInterface import ZCatalogInterface
 
 manage_addZCatalogForm=HTMLFile('addZCatalog',globals())
 
@@ -166,8 +165,6 @@ class ZCatalog(Folder, Persistent, Implicit):
     meta_type = "ZCatalog"
     icon='misc_/ZCatalog/ZCatalog.gif'
 
-    __extends__=(ZCatalogInterface,)
-    
     manage_options=(  
         {'label': 'Contents', 'action': 'manage_main',
          'target': 'manage_main',