Fix lint

Author: Connormiha

packages/jest-serializer/src/__tests__/index.test.ts

@@ -12,7 +12,6 @@ import prettyFormat from 'pretty-format';
 import fs from 'fs';
 import os from 'os';
 import path from 'path';
-import v8 from 'v8';
 
 import serializer from '..';