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

This reverts commit 3b53bfd2f7.

registry/components/echo-trail/registry-item.json

@@ -1,77 +0,0 @@
-{
-  "$schema": "https://hyperframes.heygen.com/schema/registry-item.json",
-  "name": "echo-trail",
-  "type": "hyperframes:component",
-  "title": "Echo Trail",
-  "description": "A moving element renders with N ghosted copies of itself at t minus i times delta, opacity stepped down per ghost; one traversal, echoes collapsing into the settled element at rest.",
-  "tags": ["motion-primitive", "demonstrate", "trail", "onion-skin", "ghosts", "deterministic"],
-  "jobs": ["demonstrate"],
-  "family": "demonstrate",
-  "profile": "onion-skin",
-  "evidence": "Wave L5 frame study: generalized onion skin from the trails contact sheets",
-  "syncPoints": [{ "id": "travel-complete", "phase": "in", "offset": 2.1 }],
-  "files": [
-    {
-      "path": "echo-trail.html",
-      "target": "compositions/components/echo-trail.html",
-      "type": "hyperframes:snippet"
-    }
-  ],
-  "variables": [
-    {
-      "id": "echoes",
-      "type": "number",
-      "role": "style",
-      "label": "Echoes",
-      "description": "Ghost copy count, clamped 2 to 6.",
-      "default": 4
-    },
-    {
-      "id": "delta",
-      "type": "number",
-      "role": "timing",
-      "label": "Delta",
-      "description": "Lag between successive ghosts in seconds, clamped 0.03 to 0.3.",
-      "default": 0.09
-    },
-    {
-      "id": "path",
-      "type": "enum",
-      "role": "timing",
-      "label": "Path",
-      "description": "Authored traversal preset.",
-      "default": "sweep",
-      "options": [
-        { "value": "sweep", "label": "Sweep" },
-        { "value": "rise", "label": "Rise" },
-        { "value": "arc", "label": "Arc" }
-      ]
-    },
-    {
-      "id": "accent",
-      "type": "enum",
-      "role": "style",
-      "label": "Accent",
-      "description": "Subject accent color: green rides --brand, blue rides --accent, violet rides --accent-2.",
-      "default": "green",
-      "options": [
-        { "value": "green", "label": "Green" },
-        { "value": "blue", "label": "Blue" },
-        { "value": "violet", "label": "Violet" }
-      ]
-    },
-    {
-      "id": "exit",
-      "type": "enum",
-      "role": "timing",
-      "label": "Exit",
-      "description": "Optional departure. Default none: the settled element holds until the frame cuts.",
-      "default": "none",
-      "options": [
-        { "value": "none", "label": "None" },
-        { "value": "fade", "label": "Fade" },
-        { "value": "up", "label": "Up" }
-      ]
-    }
-  ]
-}