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

This reverts commit 3b53bfd2f7.

registry/components/scroll-feed/registry-item.json

@@ -1,65 +0,0 @@
-{
-  "$schema": "https://hyperframes.heygen.com/schema/registry-item.json",
-  "name": "scroll-feed",
-  "type": "hyperframes:component",
-  "title": "Scroll Feed",
-  "description": "A loop-friendly column of varied skeleton post cards scrolls upward with subtle motion trails and an agitated pace.",
-  "tags": ["motion-primitive", "effects", "scroll", "feed", "loop", "agitation"],
-  "jobs": ["demonstrate"],
-  "family": "effects",
-  "profile": "continuous",
-  "evidence": "Wave F U9 scroll-feed specification",
-  "files": [
-    {
-      "path": "scroll-feed.html",
-      "target": "compositions/components/scroll-feed.html",
-      "type": "hyperframes:snippet"
-    }
-  ],
-  "variables": [
-    {
-      "id": "speed",
-      "type": "enum",
-      "role": "timing",
-      "label": "Scroll speed",
-      "description": "Pace of the upward feed movement.",
-      "default": "doom",
-      "options": [
-        { "value": "doom", "label": "Doom" },
-        { "value": "frantic", "label": "Frantic" }
-      ]
-    },
-    {
-      "id": "card_count",
-      "type": "number",
-      "role": "content",
-      "label": "Card count",
-      "description": "Number of skeleton posts in one repeated feed cycle.",
-      "default": 6,
-      "min": 4,
-      "max": 10,
-      "step": 1
-    },
-    {
-      "id": "cues",
-      "type": "string",
-      "role": "timing",
-      "label": "Cues",
-      "description": "Comma-separated seconds (from mount start); each cue advances the feed by one card. Empty synthesizes evenly spaced flicks, one per card.",
-      "default": ""
-    },
-    {
-      "id": "exit",
-      "type": "enum",
-      "role": "timing",
-      "label": "Exit",
-      "description": "Optional departure. Default none: the feed scrolls until the frame cuts.",
-      "default": "none",
-      "options": [
-        { "value": "none", "label": "None" },
-        { "value": "fade", "label": "Fade" },
-        { "value": "up", "label": "Up" }
-      ]
-    }
-  ]
-}