Fixed Argutement Error in statements.rb

Hi,

I got this error:
```ruby
lib/active_record/connection_adapters/sqlserver/database_statements.rb:6:in `select_rows': wrong number of arguments (3 for 2) (ArgumentError) 
```
with Rails 4.0.4 and the master branch of the activerecord-sqlserver-adapter.

Hope you will merge this pull request which should solve the issue. Thanks!

Cheers
Erik