refactor(GlCarousel): Remove Carousel component from design system

mentioned in commit 93909a1c

mentioned in merge request gitlab-org/editor-extensions/gitlab-jetbrains-plugin!811 (closed)

mentioned in merge request gitlab-org/frontend/pajamas-adoption-scanner!338 (merged)

mentioned in merge request status-page!903

mentioned in merge request gitlab!162441 (merged)

mentioned in merge request gitlab!163043 (closed)

mentioned in merge request gitlab-org/gitlab-services/design.gitlab.com!4003 (merged)

mentioned in merge request gitlab-org/frontend/playground/accessibility-scanner!49 (merged)