Fix some warnings about unused parameters

Change-Id: I4cd941beec8a8b2d35a5b1fce48dd12facae7154
Reviewed-by: hjk <hjk@qt.io>

src/plugins/cmakeprojectmanager/fileapidataextractor.cpp

@@ -698,6 +698,8 @@ FileApiQtcData generateFallbackData(const FilePath &topCmakeFile,
                                     const FilePath &buildDirectory,
                                     QString errorMessage)
 {
+    Q_UNUSED(buildDirectory)
+
     FileApiQtcData result;
 
     result.rootProjectNode.reset(new CMakeProjectNode{sourceDirectory});

src/plugins/coreplugin/editormanager/editorview.cpp

@@ -135,7 +135,7 @@ EditorView::EditorView(SplitterOrView *parentSplitterOrView, QWidget *parent) :
     m_container->addWidget(empty);
     m_widgetEditorMap.insert(empty, nullptr);
 
-    auto dropSupport = new DropSupport(this, [this](QDropEvent *event, DropSupport *dropSupport) -> bool {
+    const auto dropSupport = new DropSupport(this, [this](QDropEvent *event, DropSupport *) {
         // do not accept move events except from other editor views (i.e. their tool bars)
         // otherwise e.g. item views that support moving items within themselves would
         // also "move" the item into the editor view, i.e. the item would be removed from the