Camwebplat 110 delete unwanted

When we started Assisted Migration, we continued to build on the platform we had already started in previous iterations of the project. There were some things we built then that aren't being taken forward (at least for the forseeable future). This inevitably means that there is some config in the patform that we are not currently using. This MR attempts to clean up the platform and remove unwanted config:

Nodes:

• Landing page
• Top Level Page

Paragraphs:

• YouTube
• Basic Limited
• Text block
• Section divider
• Questions and Answers
• Accordian
• Promo block
• Link block
• Image link
• Image
• Embedded media
• Document list
• Content teaser
• Content Layout

Components:

• Topper
• Landing page topper
• Section divider

Modules:

• Backup Migrate
• Coffee
• Advanced Editor link
• EU Cookie compliance
• Feeds
• Feeds ex
• Feeds Tamper
• Gather content
• Google analytics
• Layout Paragraphs
• Message banner
• Node read time
• Shorthand
• Tamper
• Quick node block
• Rate
• Remote stream wrapper
• Responsive preview
• Same page preview
• Similar terms
• Twitter block
• Voting API

Also gone:

• Basic limited filter format (as it was only in use for top level page)