Don't guarantee curmirror inc delete for win compatibility

git-svn-id: http://svn.savannah.nongnu.org/svn/rdiff-backup@316 2b77aa54-bcbc-44c9-a7ec-4f6cf2b41109

trunk/rdiff-backup/rdiff_backup/Main.py

@@ -363,7 +363,7 @@ def backup_remove_curmirror_local():
 	else: older_inc = curmir_incs[1]
 
 	C.sync() # Make sure everything is written before curmirror is removed
-	older_inc.sync_delete()
+	older_inc.delete()
 
 
 def Restore(src_rp, dest_rp = None):