GREG-82: Fixing linting warnings

frontend/src/routes/components/sponsorGuestButtons.tsx

@@ -3,7 +3,7 @@ import { Box, IconButton, Theme } from '@mui/material'
 import PersonAddIcon from '@mui/icons-material/PersonAdd'
 import React from 'react'
 import { useTranslation } from 'react-i18next'
-import { Link, useHistory } from 'react-router-dom'
+import { useHistory } from 'react-router-dom'
 
 interface SponsorGuestButtonsProps {
   yourGuestsActive?: boolean,

frontend/src/routes/sponsor/frontpage/index.tsx

@@ -168,7 +168,6 @@ const WaitingGuests = ({ persons }: GuestProps) => {
 function FrontPage() {
   const [persons, setPersons] = useState<Array<PersonInfo>>([])
 
-  const [t] = useTranslation(['common'])
   const fetchGuestsInfo = async () => {
     const response = await fetch('/api/ui/v1/guests/?format=json')
     const jsonResponse = await response.json()