chore: add no unused vars lint rule

app/api/web/add-card-callback/[lang]/route.ts

@@ -1,5 +1,3 @@
-import { env } from "process"
-
 import { Lang } from "@/constants/languages"
 import { profile } from "@/constants/routes/myPages"
 import { serverClient } from "@/lib/trpc/server"

app/api/web/revalidate/hotel/route.ts

@@ -53,7 +53,7 @@ export async function POST(request: NextRequest) {
 
     let tag = ""
     if (content_type.uid === "hotel_page") {
-      const tag = generateHotelUrlTag(locale, entry.hotel_page_id)
+      tag = generateHotelUrlTag(locale, entry.hotel_page_id)
     } else {
       console.error(
         `Invalid content_type, received ${content_type.uid}, expected "hotel_page"`