chore: simplify slots (#16765)

* chore: simplify slots

* unused

packages/svelte/src/compiler/phases/3-transform/server/visitors/shared/component.js

@@ -10,7 +10,6 @@ import {
 import * as b from '#compiler/builders';
 import { is_element_node } from '../../../../nodes.js';
 import { dev } from '../../../../../state.js';
-import { get_attribute_chunks } from '../../../../../utils/ast.js';
 
 /**
  * @param {AST.Component | AST.SvelteComponent | AST.SvelteSelf} node
@@ -242,14 +241,7 @@ export function build_inline_component(node, expression, context) {
 			params.push(pattern);
 		}
 
-		const slot_fn = b.arrow(
-			params,
-			// TODO: This will always produce correct results because it will always produce async functions
-			// if the current component is an async component, but it may produce async functions where they're
-			// not necessary -- eg. when the component is asynchronous but the child content is not.
-			// May or may not be worth optimizing.
-			b.block([call_child_payload(b.block(block.body), node.fragment.metadata.is_async)])
-		);
+		const slot_fn = b.arrow(params, b.block(block.body));
 
 		if (slot_name === 'default' && !has_children_prop) {
 			if (

packages/svelte/tests/snapshot/samples/function-prop-no-getter/_expected/server/index.svelte.js

@@ -15,9 +15,7 @@ export default function Function_prop_no_getter($$payload) {
 		onmouseenter: () => count = plusOne(count),
 
 		children: ($$payload) => {
-			$$payload.child(($$payload) => {
-				$$payload.push(`<!---->clicks: ${$.escape(count)}`);
-			});
+			$$payload.push(`<!---->clicks: ${$.escape(count)}`);
 		},
 
 		$$slots: { default: true }