Fix double blank lines in generated production.rb

The change in 2b1fa89 left a blank line
above the skip_active_record check, while previously the check was
immediately after the previous line.

railties/lib/rails/generators/rails/app/templates/config/environments/production.rb.tt

@@ -95,7 +95,6 @@ Rails.application.configure do
 
   # Don't log any deprecations.
   config.active_support.report_deprecations = false
-
   <%- unless options.skip_active_record? -%>
 
   # Do not dump schema after migrations.