refactor: remove retired data format support

src/routes/builder/+page.server.ts

@@ -3,7 +3,7 @@ import { gameDataIconUrl } from '$lib/server/game-data-icons';
 import { getSessionUser } from '$lib/server/auth/session';
 import { fail } from '@sveltejs/kit';
 import { randomUUID } from 'node:crypto';
-import { migrateLoadoutDraft } from '$lib/builder/loadout';
+import { parseLoadoutDraft } from '$lib/builder/loadout';
 import type { Actions, PageServerLoad } from './$types';
 
 const validVisibility = new Set(['private', 'unlisted', 'public']);
@@ -13,7 +13,7 @@ const slugify = (value: string) => value.toLowerCase().normalize('NFKD')
 function parseLoadout(raw: FormDataEntryValue | null) {
 	if (typeof raw !== 'string' || raw.length > 250_000) return null;
 	try {
-		return migrateLoadoutDraft(JSON.parse(raw));
+		return parseLoadoutDraft(JSON.parse(raw));
 	} catch {
 		return null;
 	}