chore: lint code to remove unused imports and variables (#7033)

web/app/components/datasets/hit-testing/textarea.tsx

@@ -1,4 +1,3 @@
-import { useContext } from 'use-context-selector'
 import { useTranslation } from 'react-i18next'
 import Button from '../../base/button'
 import Tag from '../../base/tag'
@@ -6,7 +5,6 @@ import Tooltip from '../../base/tooltip'
 import { getIcon } from '../common/retrieval-method-info'
 import s from './style.module.css'
 import cn from '@/utils/classnames'
-import DatasetDetailContext from '@/context/dataset-detail'
 import type { HitTestingResponse } from '@/models/datasets'
 import { hitTesting } from '@/service/datasets'
 import { asyncRunSafe } from '@/utils'
@@ -40,7 +38,6 @@ const TextAreaWithButton = ({
   onSubmit: _onSubmit,
 }: TextAreaWithButtonIProps) => {
   const { t } = useTranslation()
-  const { indexingTechnique } = useContext(DatasetDetailContext)
 
   function handleTextChange(event: any) {
     setText(event.target.value)