Removed a bunch of legacy django.db.backend imports

git-svn-id: http://code.djangoproject.com/svn/django/trunk@5975 bcc190cf-cafb-0310-a4f2-bffc1f526a37

django/core/management/commands/syncdb.py

@@ -12,7 +12,7 @@ class Command(NoArgsCommand):
     args = '[--verbosity] [--noinput]'
 
     def handle_noargs(self, **options):
-        from django.db import backend, connection, transaction, models
+        from django.db import connection, transaction, models
         from django.conf import settings
         from django.core.management.sql import table_list, installed_models, sql_model_create, sql_for_pending_references, many_to_many_sql_for_model, custom_sql_for_model, sql_indexes_for_model, emit_post_sync_signal
 

django/core/management/sql.py

@@ -214,7 +214,7 @@ def sql_model_create(model, style, known_models=set()):
     Returns the SQL required to create a single model, as a tuple of:
         (list_of_sql, pending_references_dict)
     """
-    from django.db import backend, connection, models
+    from django.db import connection, models
 
     opts = model._meta
     final_output = []
@@ -282,7 +282,7 @@ def sql_for_pending_references(model, style, pending_references):
     """
     Returns any ALTER TABLE statements to add constraints after the fact.
     """
-    from django.db import backend, connection
+    from django.db import connection
     from django.db.backends.util import truncate_name
 
     qn = connection.ops.quote_name
@@ -307,7 +307,7 @@ def sql_for_pending_references(model, style, pending_references):
     return final_output
 
 def many_to_many_sql_for_model(model, style):
-    from django.db import backend, connection, models
+    from django.db import connection, models
     from django.contrib.contenttypes import generic
 
     opts = model._meta
@@ -390,7 +390,7 @@ def custom_sql_for_model(model):
 
 def sql_indexes_for_model(model, style):
     "Returns the CREATE INDEX SQL statements for a single model"
-    from django.db import backend, connection
+    from django.db import connection
     output = []
 
     qn = connection.ops.quote_name