fully exclude impossible case

GUI/View/Import/ImportDataUtil.cpp

@@ -29,8 +29,6 @@ QString GUI::View::ImportDataUtil::Import1dData(RealItem* realItem,
 
     ASSERT(selectedLoader);
 
-    // -- try with selected CSV loader. If none selected, try with QRE loader
-
     QFile file(fileName);
     const bool ok = file.open(QFile::ReadOnly | QIODevice::Text);
     if (!ok)
@@ -46,11 +44,7 @@ QString GUI::View::ImportDataUtil::Import1dData(RealItem* realItem,
         // #baimport implement decompress
     }
 
-    IDataLoader* loader = nullptr;
-    if (selectedLoader == nullptr)
-        loader = new QREDataLoader();
-    else
-        loader = selectedLoader->clone();
+    IDataLoader* loader = selectedLoader->clone();
     loader->initWithDefaultImportSettings();
     loader->setRealDataItem(realItem);
     realItem->setDataLoader(loader);