remove debug trace logging, keep clear inside if block

Author: jhpohovey

src/ProfileExplorerUI/MainWindowPanels.cs

@@ -1028,19 +1028,17 @@ private async Task SetupPanels() {
   }
 
   private async Task SetupSectionPanel() {
-    Trace.WriteLine($"SetupSectionPanel: MainSummary={SectionPanel.MainSummary?.ModuleName ?? "NULL"}, Docs={sessionState_.Documents.Count}");
-
     if (SectionPanel.MainSummary == null) {
       SectionPanel.CompilerInfo = compilerInfo_;
       SectionPanel.Session = this;
 
-      // Clear stale module summaries from any previous session.
+      // Clear stale module summaries from any previous session
+      // before adding the new ones.
       SectionPanel.ClearModuleSummaries();
 
       foreach (var doc in sessionState_.Documents) {
         if (doc != sessionState_.MainDocument &&
             doc != sessionState_.DiffDocument) {
-          // Add optional modules, usually used for profiling.
           SectionPanel.AddModuleSummary(doc.Summary);
         }
       }