Remove gl-new-card from pipeline editor card

What does this MR do and why?

• Removes gl-new-card from the pipeline editor card (more details in Migration: GlCard (gl-new-card variant) to Crud (#476988))

Screenshots or screen recordings

Before	After

How to set up and validate locally

Project > Build > Pipeline editor

Links

• ✂️ UX Paper Cuts 17.3 → Dark mode - Design Support (#452231 - closed)
• Migration: GlCard (gl-new-card variant) to Crud (#476988)