fix:修复save chart有多个expression时，无法删除的bug

nezha-fronted/src/components/common/bottomBox/tabs/endpointQueryTab.vue

@@ -169,7 +169,6 @@
       },
       saveChart() { //新增chart
         let chart = {
-          id:'',
           title: '',
           type:'line',
           span:12,

nezha-fronted/src/components/common/leftMenu.vue

@@ -223,7 +223,6 @@
           immediate: true,
           handler(n) {
             this.active = n;
-            console.log(n)
           }
         },
         currentProjectChange: {
@@ -257,7 +256,6 @@
           } else {
             this.parentMenu = "dashboards";
           }
-          console.log(cacheMenu)
           if (cacheMenu) {
             this.active = cacheMenu;
           } else {

nezha-fronted/src/components/page/dashboard/chartBox.vue

@@ -394,14 +394,12 @@
         this.promqlCount++;
       },
       removeExpression(index) {
-        console.log(this.promqlCount)
-        if (this.promqlCount > 0) {
+        if (this.promqlCount > 1) {
           this.expressions.splice(index, 1);
           this.legends.splice(index, 1);
           this.promqlKeys.splice(index, 1);
           this.elementIds.splice(index, 1);
           this.promqlCount--;
-
           this.$nextTick(() => {
             this.expressions.forEach((ex, index) => {
               if (ex) {
@@ -578,7 +576,6 @@
             });
           }
         }
-        console.log('save chart',params)
 
         let intervalTime = 1; //设置3秒超时
         let interval = setInterval(() => {
@@ -696,7 +693,6 @@
       },
       getAlertParam:function(param,opType){
         this.$refs.chartForm.validate((valid) => {
-          console.log('valid',valid,param,opType)
           const params = {
             title: this.editChart.title,//this.editChart
             span: this.editChart.span,
@@ -1122,11 +1118,14 @@
           this.editChart.elements = [{expression: "", legend: "", type: "expert", id: ""}];
         }
         this.editChart.elements.forEach(element => {
+          if(element&&element!=''){
             this.promqlKeys.push(getUUID());
             this.expressions.push(element.expression);
             this.legends.push(element.legend);
             this.elementIds.push(element.id);
+          }
         });
+        this.promqlCount=this.editChart.elements.length;
         this.$nextTick(() => {
           this.expressions.forEach((ex, index) => {
             if (ex) {