Remove [Slick Media] module dependencies from [Varbase Carousels] module and configs

#3151898: Remove [Slick Media] module dependencies from [Varbase Media] module and replace it with the main module Slick and uninstall

Slick Media project page is list more info
https://www.drupal.org/project/slick_media

A migration from this module into main Slick 2.x as a plugin is provided at Slick Media DEV 3.x: #3024726: Create a new branch for deprecation .

Migration procedures: Install the Slick Media DEV 3.x, run /update.php, config dependencies will be updated to point to the main Slick module, and this module will be uninstalled automatically. Repeat: Do not manually uninstall, run /update.php for self-uninstall instead, to not lose stored config.

So the SlickMediaFormatter.php is in Slick under the same name SlickMediaFormatter.php and the same plugin id.