This should work for you:
NSArray *indexesArray = [[NSArray alloc]initWithArray:[_tableFavoritos indexPathsForSelectedRows]];
NSMutableIndexSet *indexSet = [NSMutableIndexSet new];
[indexesArray enumerateObjectsUsingBlock:^(NSIndexPath *indexPath, NSUInteger idx, BOOL *stop) {
[indexSet addIndex:indexPath.row];
}];
[arrayFavoritos removeObjectsAtIndexes:indexSet];
[_tableFavoritos deleteRowsAtIndexPaths:[_tableFavoritos indexPathsForSelectedRows] withRowAnimation:UITableViewRowAnimationFade];
[_tableFavoritos reloadData];