frontend: fix clear view in logs viewer

frontend/src/components/LogsViewer.vue

@@ -59,7 +59,7 @@ export default {
   },
   methods: {
     onClear() {
-      this.logLines = [];
+      while (this.$refs.linesContainer.firstChild) this.$refs.linesContainer.removeChild(this.$refs.linesContainer.firstChild);
     },
     onDownload() {
       this.logsModel.download();
@@ -145,7 +145,6 @@ export default {
         if (lines < maxLines) ++lines;
         else this.$refs.linesContainer.removeChild(this.$refs.linesContainer.firstChild);
 
-        // this.logLines.push({ time, html});
         const logLine = document.createElement('div');
         logLine.className = 'log-line';
         logLine.innerHTML = `<span class="time">${line.time || '[no timestamp]&nbsp;' }</span> <span>${line.html}</span>`;