Also remove the icons subfolder from the buttons file
Also remove the icons subfolder from the buttons file

This is no longer required as all assets from the govuk frontend
toolkit are copied to /public/images rather than /public/images/icons.

This is so that the folder structure is the same as the govuk frontend
toolkit.

alphagov/govuk_elements,gavboulton/govuk_elements,alphagov/govuk_elements,joelanman/govuk_elements,gavboulton/govuk_elements,alphagov/govuk_elements,joelanman/govuk_elements,gavboulton/govuk_elements,alphagov/govuk_elements,gavboulton/govuk_elements