Fixing linting errors

Author: EdgarButtner

src/frontend/src/pages/GanttPage/GanttChart/GanttChartSection.tsx

@@ -15,7 +15,6 @@ import { Box } from '@mui/material';
 import { useState } from 'react';
 import GanttTaskBar from './GanttChartComponents/GanttTaskBar/GanttTaskBar';
 import GanttToolTip from './GanttChartComponents/GanttToolTip';
-import { ArcherContainer } from 'react-archer';
 
 interface GanttChartSectionProps<T> {
   start: Date;