Delete some unused templates discovered by i18n process

[cdrini]

Closes #9057

These files aren't references, so let's delete them and remove them from messages.pot

Technical

• openlibrary/templates/type/macro/*, openlibrary/templates/type/rawtext/*
  • Legacy OL types we no longer support ; they should also be deleted from infogami at some point. These are legacy from back when OL used to be developed on OL! So these just contain e.g. dead JS files or dead python templates.
  • 133 type macros
  • 46 type rawtext
• openlibrary/macros/EditButtonsMacros.html
  • Only used by type/macro, type/rawtext
• openlibrary/macros/SRPCoverImage.html: Unreferenced
• openlibrary/macros/databarAuthor.html: Unreferenced (I confirmed it's not used on our author page; it's clearly some ancient thing. Doesn't even use the same templating language as the rest of our html files!).
• openlibrary/templates/admin/profile.html: Unreferenced
• openlibrary/templates/lib/markdown.html: This file itself is unreferenced; it seems like all its markup was at some point moved out of the repo and into infogami at https://openlibrary.org/help/markdown
• Also removed some CSS classes/etc that were no longer being referenced.

Testing

Confirmed things load correctly!

Screenshot

Stakeholders

[cdrini]

Auto-merging this one ; it's been open for 2w and is causing a bit of confusion for folks and I'll be away shortly and need to wrap up some loose ends! Feel free to give a post-merge review 👍