Finished refactoring

src/utils/groups.be.ts

@@ -1,7 +1,6 @@
 import {app} from "@/firebase";
 import {CorporateUser, Group, MasterCorporateUser, StudentUser, TeacherUser, User} from "@/interfaces/user";
 import client from "@/lib/mongodb";
-import {collection, doc, getDoc, getDocs, getFirestore, query, setDoc, where} from "firebase/firestore";
 import moment from "moment";
 import {getUser} from "./users.be";
 import {getSpecificUsers} from "./users.be";