fixed these warnings

Author: ArkiLovesProgramming

tasksync_frontend/src/components/Workspace/WorkspaceCol/index.jsx

@@ -1,4 +1,4 @@
-import React, { useEffect, useCallback } from 'react'
+import React, { useEffect } from 'react'
 import './index.css'
 //fake data
 // compone
@@ -11,7 +11,6 @@ import AddTask from '../../AddTask';
 import api from '../../../common/api';
 import EditIcon from '@mui/icons-material/Edit';
 import { Draggable, Droppable } from 'react-beautiful-dnd';
-import PubSub from 'pubsub-js';
 
 export default function WorkSpaceCol(props) {
 
@@ -21,10 +20,6 @@ export default function WorkSpaceCol(props) {
 
     const [isModifyingTitle, setIsModifyingTitle] = React.useState(false)
 
-    function placeTaskToTG(_, { taskgroupId, task, index }) {
-
-    }
-
     useEffect(() => {
 
     }, [props.mytasks])
@@ -42,10 +37,6 @@ export default function WorkSpaceCol(props) {
         props.addOneTask(taskgroupId, task)
     }
 
-    function handleClick() {
-
-    }
-
     async function toggleTtitleModifyingBox(e) {
         if (isModifyingTitle) {
             if (e.target.value !== props.taskgroup.title) {