chore(svelte): Remove stub logger (#63342)

We've recently added v2 telemetry support and should not use the stub
logger anymore.

## Test plan

Code inspection.

client/web-sveltekit/.env

@@ -1,2 +1 @@
 PUBLIC_DOTCOM=
-PUBLIC_ENABLE_EVENT_LOGGER=

client/web-sveltekit/src/lib/logger.ts

@@ -1,18 +0,0 @@
-// We want to limit the number of imported modules as much as possible
-
-import { onMount } from 'svelte'
-
-import { PUBLIC_ENABLE_EVENT_LOGGER } from '$env/static/public'
-
-/**
- * Can only be called during component initialization. It logs a view event when
- * the component is mounted (and event logging is enabled).
- */
-export function logViewEvent(eventName: string, eventProperties?: any, publicArgument?: any): void {
-    if (PUBLIC_ENABLE_EVENT_LOGGER) {
-        onMount(() => {
-            // TODO: Implement event logging
-            console.log('logViewEvent', eventName, eventProperties, publicArgument)
-        })
-    }
-}

client/web-sveltekit/src/routes/[...repo=reporev]/RepoNotFoundError.svelte

@@ -1,11 +1,15 @@
 <script lang="ts">
+    import { onMount } from 'svelte'
+
     import HeroPage from '$lib/HeroPage.svelte'
-    import { logViewEvent } from '$lib/logger'
+    import { TELEMETRY_RECORDER } from '$lib/telemetry'
 
     export let repoName: string
     export let viewerCanAdminister: boolean
 
-    logViewEvent('RepositoryError')
+    onMount(() => {
+        TELEMETRY_RECORDER.recordEvent('repo.error.notFound', 'view')
+    })
 </script>
 
 <HeroPage title="Repository not found" icon={ILucideBookX}>