fix(接口测试): 修复首页在偶发情况下接口覆盖率显示为0的问题

--bug=1031569 --user=宋天阳 【接口测试】新建api后返回首页-接口数量统计-接口覆盖率显示为0%
https://www.tapd.cn/55049933/s/1426809

api-test/frontend/src/business/home/components/dashboard/ApiDashboard.vue

@@ -377,7 +377,6 @@ export default {
         this.apiData.rpcCount = apiResponse.rpcCount;
         this.apiData.sqlCount = apiResponse.sqlCount;
         this.apiData.createdInWeek = apiResponse.createdInWeek;
-        this.apiData.apiCoveredRate = apiResponse.apiCoveredRate;
         this.apiData.completedRate = apiResponse.completedRate;
         this.apiData.runningCount = apiResponse.runningCount;
         this.apiData.notStartedCount = apiResponse.notStartedCount;