TextEditor: Flip default to 'duplicatedSupported'

opt-out now, for all editors created by BaseTextEditorFactories.

Change-Id: I01d0a9ff26320fcd0b84ff90ff22c747cf84b84c
Reviewed-by: hjk <hjk121@nokiamail.com>

src/plugins/genericprojectmanager/genericprojectfileseditor.cpp

@@ -41,19 +41,6 @@ using namespace TextEditor;
 namespace GenericProjectManager {
 namespace Internal {
 
-//
-// ProjectFilesEditor
-//
-
-class ProjectFilesEditor : public BaseTextEditor
-{
-public:
-    ProjectFilesEditor()
-    {
-        setDuplicateSupported(true);
-    }
-};
-
 //
 // ProjectFilesFactory
 //
@@ -66,7 +53,6 @@ ProjectFilesFactory::ProjectFilesFactory()
     addMimeType(Constants::INCLUDES_MIMETYPE);
     addMimeType(Constants::CONFIG_MIMETYPE);
 
-    setEditorCreator([]() { return new ProjectFilesEditor; });
     setDocumentCreator([]() { return new BaseTextDocument(Constants::FILES_EDITOR_ID); });
     setEditorActionHandlers(TextEditorActionHandler::None);
 }