fix(接口测试): 请求头设置失效

frontend/src/business/components/api/test/model/ScenarioModel.js

@@ -1374,7 +1374,6 @@ class JMXGenerator {
     for (let index in request.headers) {
       if (request.headers.hasOwnProperty(index)) {
         if (request.headers[index].name === 'Content-Type' && request.headers[index].enable != false) {
-          request.headers.splice(index, 1);
           hasContentType = true;
           break;
         }