clean code

packages/app/src/components/PageEditor/CodeMirrorEditor.jsx

@@ -113,7 +113,6 @@ export default class CodeMirrorEditor extends AbstractEditor {
       isSimpleCheatsheetShown: this.props.isGfmMode && this.props.value.length === 0,
       isCheatsheetModalShown: false,
       additionalClassSet: new Set(),
-      isTextlintEnabled: false,
     };
 
     this.gridEditModal = React.createRef();
@@ -159,8 +158,6 @@ export default class CodeMirrorEditor extends AbstractEditor {
       ? { dicPath: '/static/dict/cdn' }
       : { dicPath: 'https://cdn.jsdelivr.net/npm/kuromoji@0.1.2/dict' };
 
-    this.state.isTextlintEnabled = this.props.isTextlintEnabled;
-
     this.textlintConfig = [
       { name: 'no-unmatched-pair' },
       { name: 'common-misspellings' },