Package cleanup & transition to latest apollo.

client/src/components/scoreboard-remove-button/scorebard-remove-button.component.jsx

@@ -2,7 +2,7 @@ import React, { useState } from "react";
 import { useTranslation } from "react-i18next";
 import { Button, notification } from "antd";
 import { DeleteFilled } from "@ant-design/icons";
-import { useMutation } from "@apollo/react-hooks";
+import { useMutation } from "@apollo/client";
 import { DELETE_SCOREBOARD_ENTRY } from "../../graphql/scoreboard.queries";
 import { logImEXEvent } from "../../firebase/firebase.utils";