remove using default from address from custom mailer_parent class

lib/exception_notifier/email_notifier.rb

@@ -44,7 +44,6 @@ def exception_notification(env, exception, options = {}, default_options = {})
             @exception  = exception
 
             env_options = env['exception_notifier.options'] || {}
-            options[:sender_address] ||= self.class.default[:from] unless self.class.default[:from].nil?
             @options    = default_options.merge(env_options).merge(options)
 
             @kontroller = env['action_controller.instance'] || MissingController.new
@@ -62,7 +61,6 @@ def background_exception_notification(exception, options = {}, default_options =
             load_custom_views
 
             @exception = exception
-            options[:sender_address] ||= self.class.default[:from] unless self.class.default[:from].nil?
             @options   = default_options.merge(options).symbolize_keys
             @backtrace = exception.backtrace || []
             @timestamp = Time.current

test/exception_notifier/email_notifier_test.rb

@@ -353,25 +353,3 @@ def index; end
     assert_equal '[ERROR]  (ZeroDivisionError) "divided by 0"', mail.subject
   end
 end
-
-class EmailNotifierWithCustomParentClassTest < ActiveSupport::TestCase
-  class ApplicationMailer < ActionMailer::Base
-    default from: 'infrastructure@example.com'
-  end
-
-  setup do
-    @exception = ZeroDivisionError.new('divided by 0')
-    @exception.set_backtrace(["#{__FILE__}:#{__LINE__}"])
-  end
-
-  test 'uses default from configured parent class' do
-    email_notifier = ExceptionNotifier::EmailNotifier.new(
-      mailer_parent: 'EmailNotifierWithCustomParentClassTest::ApplicationMailer',
-      exception_recipients: %w[dummyexceptions@example.com]
-    )
-    mail = email_notifier.call(@exception)
-
-    assert email_notifier.__send__(:mailer) < ApplicationMailer
-    assert_equal ['infrastructure@example.com'], mail.from
-  end
-end