update imports for React 18

Change-Id: Ibc75ce532003a478b31d5d85d84c83a017262041
diff --git a/client/src/components/ConversationsOverviewCard.js b/client/src/components/ConversationsOverviewCard.js
index 89f8576..04f74f5 100644
--- a/client/src/components/ConversationsOverviewCard.js
+++ b/client/src/components/ConversationsOverviewCard.js
@@ -1,4 +1,4 @@
-import React, { useEffect, useState } from 'react';
+import { useEffect, useState } from 'react'
 import { Card, CardActionArea, CardContent, CircularProgress, Typography } from '@mui/material';
 import { useNavigate, useParams } from 'react-router';
 import authManager from '../AuthManager'