Revert "Merge pull request #43 from rubys/rails_issues_9461"
Revert "Merge pull request #43 from rubys/rails_issues_9461"

This reverts commit ccf92ee40cb4c9a966a22106a721f7364b5fc6c9, reversing
changes made to 8105eb9ee2d4889f9d3d7c327899b63493f4b061.

Reason: Helper module should be included into AV::Base, extending it with
the helpers and config options.

zBMNForks/sprockets-rails,jordan-brough/sprockets-rails,prathamesh-sonpatki/sprockets-rails,spodlecki/sprockets-rails,envato/sprockets-rails,Andreis13/sprockets-rails,guilleiguaran/sprockets-rails,rails/sprockets-rails,github/sprockets-rails,maclover7/sprockets-rails,eileencodes/sprockets-rails,jeremy/sprockets-rails