Run the following two commands:
rails d simple_form:install --bootstrap ## Destroy the existing configurations for simple_form
rails g simple_form:install ## Generate the clean configurations for simple_form
When you initially ran the generator for simple_form
with --bootstrap
option, it created bootstrap compatible configurations for simple_form
. The changes that have been specifically made for bootstrap are spread across multiple files. It would be hard to cherry-pick them and remove unless you know exactly what needs to be removed and what to keep for simple_form
.