chore: add no unused vars lint rule

components/Header/MainMenu/MyPagesMenu/index.tsx

@@ -3,8 +3,6 @@
 import { useRef } from "react"
 import { useIntl } from "react-intl"
 
-import { MembershipLevelEnum } from "@/constants/membershipLevels"
-import { trpc } from "@/lib/trpc/client"
 import useDropdownStore from "@/stores/main-menu"
 
 import { ChevronDownSmallIcon } from "@/components/Icons"

components/Header/MainMenu/MyPagesMenuContent/index.tsx

@@ -25,7 +25,6 @@ export default function MyPagesMenuContent({
   user,
   membershipLevel,
 }: Props) {
-  const lang = useLang()
   const intl = useIntl()
   const myPagesMenuContentRef = useTrapFocus()
   const { data: myPagesNavigation } = useMyPagesNavigation()