Fixed #7532 -- Removed some dead code from the db backends. Thanks, Ramiro.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@7852 bcc190cf-cafb-0310-a4f2-bffc1f526a37

django/db/backends/__init__.py

@@ -161,16 +161,6 @@ class BaseDatabaseOperations(object):
         """
         return cursor.lastrowid
 
-    def limit_offset_sql(self, limit, offset=None):
-        """
-        Returns a LIMIT/OFFSET SQL clause, given a limit and optional offset.
-        """
-        # 'LIMIT 40 OFFSET 20'
-        sql = "LIMIT %s" % limit
-        if offset and offset != 0:
-            sql += " OFFSET %s" % offset
-        return sql
-
     def lookup_cast(self, lookup_type):
         """
         Returns the string to use in a query when performing lookups

django/db/backends/mysql/base.py

@@ -89,13 +89,6 @@ class DatabaseOperations(BaseDatabaseOperations):
     def fulltext_search_sql(self, field_name):
         return 'MATCH (%s) AGAINST (%%s IN BOOLEAN MODE)' % field_name
 
-    def limit_offset_sql(self, limit, offset=None):
-        # 'LIMIT 20,40'
-        sql = "LIMIT "
-        if offset and offset != 0:
-            sql += "%s," % offset
-        return sql + str(limit)
-
     def no_limit_value(self):
         # 2**64 - 1, as recommended by the MySQL documentation
         return 18446744073709551615L

django/db/backends/mysql_old/base.py

@@ -93,13 +93,6 @@ class DatabaseOperations(BaseDatabaseOperations):
     def fulltext_search_sql(self, field_name):
         return 'MATCH (%s) AGAINST (%%s IN BOOLEAN MODE)' % field_name
 
-    def limit_offset_sql(self, limit, offset=None):
-        # 'LIMIT 20,40'
-        sql = "LIMIT "
-        if offset and offset != 0:
-            sql += "%s," % offset
-        return sql + str(limit)
-
     def no_limit_value(self):
         # 2**64 - 1, as recommended by the MySQL documentation
         return 18446744073709551615L

django/db/backends/oracle/base.py

@@ -87,11 +87,6 @@ class DatabaseOperations(BaseDatabaseOperations):
         cursor.execute('SELECT %s_sq.currval FROM dual' % sq_name)
         return cursor.fetchone()[0]
 
-    def limit_offset_sql(self, limit, offset=None):
-        # Limits and offset are too complicated to be handled here.
-        # Instead, they are handled in django/db/backends/oracle/query.py.
-        return ""
-
     def lookup_cast(self, lookup_type):
         if lookup_type in ('iexact', 'icontains', 'istartswith', 'iendswith'):
             return "UPPER(%s)"