ERP5Type: remove obsolete comment/assertion in a monkey-patch to ZODB.Connection

See also http://git.erp5.org/gitweb/neoppod.git/commitdiff/54d692c?js=1
("client: drop monkey-patch that is not mandatory anymore for NEO")

product/ERP5Type/patches/ZODBConnection.py

@@ -40,15 +40,8 @@ if 1: # keep indentation. Also good for quick disabling.
     Connection.ping = ping
     Connection.newTransaction = newTransaction
 
-    # See also neo/client/__init__.py from NEOPPOD project
     if FORCE_STORAGE_SYNC_ON_CONNECTION_OPENING:
 
-      try:
-        if Connection._nexedi_fix != 5:
-            raise Exception("A different ZODB fix is already applied")
-      except AttributeError:
-        Connection._nexedi_fix = 5
-
         # Whenever an connection is opened (and there's usually an existing one
         # in DB pool that can be reused) whereas the transaction is already
         # started, we must make sure that proper storage setup is done by