Apply suggestions from code review

Co-authored-by: Simon H <5968653+dummdidumm@users.noreply.github.com>

packages/svelte/src/internal/client/reactivity/async.js

@@ -1,5 +1,5 @@
 /** @import { Effect, TemplateNode, Value } from '#client' */
-import { DESTROYED, STALE_REACTION } from '#client/constants';
+import { DESTROYED } from '#client/constants';
 import { DEV } from 'esm-env';
 import {
 	component_context,

packages/svelte/src/internal/client/reactivity/batch.js

@@ -843,7 +843,7 @@ export function eager(fn) {
 
 	eager_effect(() => {
 		if (initial) {
-			// the first time this runs, we create an inspect effect
+			// the first time this runs, we create an eager effect
 			// that will run eagerly whenever the expression changes
 			var previous_batch_values = batch_values;