chore: remove unused function (#10776)

Co-authored-by: Rich Harris <rich.harris@vercel.com>

packages/svelte/src/internal/client/render.js

@@ -42,16 +42,6 @@ const all_registered_events = new Set();
 /** @type {Set<(events: Array<string>) => void>} */
 const root_event_handles = new Set();
 
-/**
- * @param {Element} node
- * @returns {Element}
- */
-export function svg_replace(node) {
-	const first_child = /** @type {Element} */ (node.firstChild);
-	node.replaceWith(first_child);
-	return first_child;
-}
-
 /**
  * @param {string} event_name
  * @param {Element} dom