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

This reverts commit 3b53bfd2f7.

registry/components/grain-field/registry-item.json

@@ -1,46 +0,0 @@
-{
-  "$schema": "https://hyperframes.heygen.com/schema/registry-item.json",
-  "name": "grain-field",
-  "type": "hyperframes:component",
-  "title": "Grain Field",
-  "description": "A clearly visible accent-tinted dot field drifts over a subtle luminance gradient in an exact ambient loop.",
-  "tags": ["motion-primitive", "background", "grain", "dots", "texture", "ambient", "loopable"],
-  "jobs": ["orient"],
-  "family": "backgrounds",
-  "profile": "ambient",
-  "evidence": "Wave G U20 grain-field specification",
-  "files": [
-    {
-      "path": "grain-field.html",
-      "target": "compositions/components/grain-field.html",
-      "type": "hyperframes:snippet"
-    }
-  ],
-  "variables": [
-    {
-      "id": "density",
-      "type": "enum",
-      "role": "style",
-      "label": "Density",
-      "description": "Dot size and spacing across the grain field.",
-      "default": "fine",
-      "options": [
-        { "value": "fine", "label": "Fine" },
-        { "value": "coarse", "label": "Coarse" }
-      ]
-    },
-    {
-      "id": "accent",
-      "type": "enum",
-      "role": "style",
-      "label": "Accent",
-      "description": "Accent token family used to color the dots and luminance wash.",
-      "default": "green",
-      "options": [
-        { "value": "green", "label": "Green" },
-        { "value": "blue", "label": "Blue" },
-        { "value": "violet", "label": "Violet" }
-      ]
-    }
-  ]
-}