Revert "feat(registry): the video-primitive moves, documented and customisable (#3090)" (#3162)

This reverts commit 3b53bfd2f7.

registry/components/sticky-mock-swap/registry-item.json

@@ -1,42 +0,0 @@
-{
-  "$schema": "https://hyperframes.heygen.com/schema/registry-item.json",
-  "name": "sticky-mock-swap",
-  "type": "hyperframes:component",
-  "title": "Sticky Mock Swap",
-  "description": "A pinned product mock cross-fades through accent-tinted feature states while matching captions rise, hold, and exit beside it.",
-  "tags": ["motion-primitive", "product-demo", "sticky", "mock", "crossfade", "feature-tour"],
-  "jobs": ["demonstrate"],
-  "family": "product-demo",
-  "profile": "sticky-swap",
-  "evidence": "Vercel and Raycast launch-page motion research: pinned product mock with caption-driven threshold swaps",
-  "files": [
-    {
-      "path": "sticky-mock-swap.html",
-      "target": "compositions/components/sticky-mock-swap.html",
-      "type": "hyperframes:snippet"
-    }
-  ],
-  "variables": [
-    {
-      "id": "captions",
-      "type": "string",
-      "role": "content",
-      "label": "Captions",
-      "description": "Comma-separated feature captions shown beside the pinned mock.",
-      "default": "Instant previews,Zero config,Ship on Friday"
-    },
-    {
-      "id": "accent",
-      "type": "enum",
-      "role": "style",
-      "label": "Accent",
-      "description": "Accent tint used across the mock states.",
-      "default": "violet",
-      "options": [
-        { "value": "green", "label": "Green" },
-        { "value": "blue", "label": "Blue" },
-        { "value": "violet", "label": "Violet" }
-      ]
-    }
-  ]
-}