Fix delete file bug

src/server.js

@@ -3,7 +3,6 @@ import helmet from 'helmet'
 import expressStaticGzip from 'express-static-gzip'
 import path from 'path'
 import morgan from 'morgan'
-import chokidar from 'chokidar'
 import jsonfile from 'jsonfile'
 import { ServerRenderer } from './utils/serverRender'
 import { Scanner } from './utils/scanner'

src/utils/dataHolder.js

@@ -81,7 +81,7 @@ export class DataHolder {
   }
 
   deleteFile (filepath) {
-    this.data.posts = this.dataHolder.data.posts.filter((post) =>
+    this.data.posts = this.data.posts.filter((post) =>
       post.filename !== filepath
     )
   }