Describe the bug
Not specifically a bug, but it seems we have some leftover tables. When you create the development app from scratch, these two tables are created:

• decidim_surveys_survey_answer_options
• decidim_surveys_survey_questions

They're not backed by models because they were ported to decidim-forms a while ago, and it looks like migrations to remove those tables were missing.

To Reproduce
Steps to reproduce the behavior:

1. Create a development app with bin/rake development_app
2. Check the db/schema.rb file of that app
3. Check that those tables exist

Expected behavior
Those tables should not be created

Screenshots
None

Stacktrace
None

Extra data (please complete the following information):

• Decidim installation: develop branch

Additional context
None