Disable granite logs on generated spec_helper.cr

[faustinoaq]

Similar issue here: https://github.com/amberframework/amber/issues/885

I tried to remove granite logs on generated recipes using spec_helper.cr.lqd (no ecr) and I got this error:

Error in line 1: while requiring "./spec/models/user_spec.cr"
in spec/models/user_spec.cr:1: while requiring "./spec_helper"
require "./spec_helper"
^
in spec/models/spec_helper.cr:1: while requiring "../spec_helper": can't find file '../spec_helper' relative to '/home/travis/build/amberframework/recipes/app/spec/models'
require "../spec_helper"
^

Ref: https://travis-ci.org/amberframework/recipes/jobs/394813615#L961

Looks like spec_helper.cr is not being generated with liquid.cr, /cc @damianham