remove only highlight

apps/remix-ide/src/app/tabs/debugger-tab.js

@@ -71,7 +71,7 @@ class DebuggerTab extends ViewPlugin {
   }
 
   deactivate () {
-    this.debuggerUI.unLoad()
+    this.debuggerUI.deletHighlights()
     super.deactivate()
   }
 

apps/remix-ide/src/app/tabs/debugger/debuggerUI.js

@@ -207,7 +207,6 @@ class DebuggerUI {
   }
 
   async unLoad () {
-    await this.debuggerModule.call('editor', 'discardHighlight')
     yo.update(this.debuggerHeadPanelsView, yo`<div></div>`)
     yo.update(this.debuggerPanelsView, yo`<div></div>`)
     yo.update(this.stepManagerView, yo`<div></div>`)
@@ -220,6 +219,10 @@ class DebuggerUI {
     this.event.trigger('traceUnloaded')
   }
 
+  async deletHighlights () {
+    await this.debuggerModule.call('editor', 'discardHighlight')
+  }
+
   renderDebugger () {
     yo.update(this.debuggerHeadPanelsView, this.vmDebugger.renderHead())
     yo.update(this.debuggerPanelsView, this.vmDebugger.render())