Epic: Deprecate legacy formation javascript

[micahchiang]

Description

During formation deprecation we discovered that some pieces of vets-website still rely on legacy formation javascript.

The most significant part of vets-website that uses this is the sitewide footer, which still relies on some logic that looks for usa-accordion classes. A quick search in vets-website shows a handful of other applications using related classes.

Most, if not all of the instances, should be converted to web components.

Javascript classes that need to be addressed are:

• usa-accordion
• sidenav
• additional-info