reverting change in sql.test.py

doc/CHANGES.txt

@@ -27,10 +27,6 @@ Zope Changes
 
     Features added
 
-     - ZSQL methods: added  workaround for a problem where a 'string' argument
-       variable was included into the generated query if the 'optional' flag inside
-       dtml-sqltest was set an if the value of the string was empty.
-
      - Included Stefan Holek's ZopeTestCase 0.9
 
      - The SiteErrorLog allows you to acknowledge (or delete) exceptions,

lib/python/Shared/DC/ZRDB/sqltest.py

@@ -159,13 +159,6 @@ class SQLTest:
                     raise ValueError, (
                         'Invalid floating-point value for <em>%s</em>' % name)
 
-            ## ZSQL methods: added  workaround for a problem where a 'string' argument
-            ## variable was included into the generated query if the 'optional' flag inside
-            ## dtml-sqltest was set an if the value of the string was empty.
-
-            elif t=='string' and len(str(v)) == 0  and args.get('optional', 0):
-                continue
-
             else:
                 v=str(v)
                 v=md.getitem('sql_quote__',0)(v)