Rely on AM::ForbiddenAttributesProtection autoload

`ActiveModel::ForbiddenAttributesProtection` is autoloaded, so this
`require` is not necessary.

Author: jonathanhefner

activerecord/lib/active_record/relation/query_methods.rb

@@ -3,7 +3,6 @@
 require "active_record/relation/from_clause"
 require "active_record/relation/query_attribute"
 require "active_record/relation/where_clause"
-require "active_model/forbidden_attributes_protection"
 require "active_support/core_ext/array/wrap"
 
 module ActiveRecord