fix: remove context decode

Author: yugasun

src/report.js

@@ -15,7 +15,6 @@ function str2hex(str) {
 
 exports.reportHttp = async function(context, { latency, method, path, statusCode }) {
   try {
-    context = JSON.parse(decodeURIComponent(context))
     // 自定级监控上报的指标名只支持【a-zA-Z0-9_-】，所以把path进行转义上报
     path = str2hex(path)
     const ServiceType = 'monitor'