Apply suggestions from code review

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

packages/svelte/src/compiler/phases/2-analyze/index.js

@@ -1,5 +1,5 @@
 /** @import { Expression, Node, Program } from 'estree' */
-/** @import { Binding, AST, ValidatedCompileOptions, ValidatedModuleCompileOptions, ExpressionMetadata } from '#compiler' */
+/** @import { Binding, AST, ValidatedCompileOptions, ValidatedModuleCompileOptions } from '#compiler' */
 /** @import { AnalysisState, Visitors } from './types' */
 /** @import { Analysis, ComponentAnalysis, Js, ReactiveStatement, Template } from '../types' */
 import { walk } from 'zimmerframe';

packages/svelte/src/internal/client/dom/blocks/boundary.js

@@ -22,7 +22,6 @@ import { get_next_sibling } from '../operations.js';
 import { queue_micro_task } from '../task.js';
 import * as e from '../../errors.js';
 import { DEV } from 'esm-env';
-import { current_async_effect, set_from_async_derived } from '../../reactivity/deriveds.js';
 import { Batch } from '../../reactivity/batch.js';
 import { internal_set, source } from '../../reactivity/sources.js';
 import { tag } from '../../dev/tracing.js';

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

@@ -19,7 +19,6 @@ import {
 	derived_safe_equal,
 	set_from_async_derived
 } from './deriveds.js';
-import { queue_micro_task } from '../dom/task.js';
 
 /**
  *

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

@@ -31,7 +31,6 @@ import {
 	HEAD_EFFECT,
 	MAYBE_DIRTY,
 	EFFECT_PRESERVED,
-	BOUNDARY_EFFECT,
 	STALE_REACTION,
 	USER_EFFECT,
 	ASYNC