tidy: remove deprecation warnings from ActionView::Helpers::SanitizeHelper

[flavorjones]

See

rails-html-sanitizer/lib/rails-html-sanitizer.rb

Lines 38 to 57 in cf78244

	[:protocol_separator,
	:uri_attributes,
	:bad_tags,
	:allowed_css_properties,
	:allowed_css_keywords,
	:shorthand_css_properties,
	:allowed_protocols].each do |meth|
	meth_name = "sanitized_#{meth}"
	define_method(meth_name) { deprecate_option(meth_name) }
	define_method("#{meth_name}=") { |_| deprecate_option("#{meth_name}=") }
	end
	private
	def deprecate_option(name)
	ActiveSupport::Deprecation.warn "The #{name} option is deprecated " \
	"and has no effect. Until Rails 5 the old behavior can still be " \
	"installed. To do this add the `rails-deprecated-sanitizer` to " \
	"your Gemfile. Consult the Rails 4.2 upgrade guide for more information."
	end

These methods were deprecated back in 2014 in 2dbae3e when the old sanitizer was dropped from Rails. I think it's time.