refactor: remove unused import in test (#6922)

Co-authored-by: Jay <jasonsaayman@gmail.com>

test/module/typings/esm/index.ts

@@ -1,5 +1,4 @@
 import axios, {
-  InternalAxiosRequestConfig,
   AxiosRequestConfig,
   AxiosHeaders,
   AxiosRequestHeaders,

test/specs/defaults.spec.js

@@ -1,5 +1,4 @@
 import defaults from '../../lib/defaults';
-import utils from '../../lib/utils';
 import AxiosHeaders from '../../lib/core/AxiosHeaders';
 
 describe('defaults', function () {

test/specs/headers.spec.js

@@ -1,5 +1,3 @@
-import assert from "assert";
-
 const {AxiosHeaders} = axios;
 
 function testHeaderValue(headers, key, val) {