EffectComposer: Avoid using tr include in headers

Removes unused default for parameter.

Change-Id: I3c9a268d12d539f1acac66d2147670dbf0bc78e8
Reviewed-by: Eike Ziller <eike.ziller@qt.io>

src/plugins/effectcomposer/effectshaderscodeeditor.h

@@ -4,7 +4,6 @@
 #pragma once
 
 #include "effectcodeeditorwidget.h"
-#include "effectcomposertr.h"
 
 #include <texteditor/texteditor.h>
 
@@ -51,8 +50,7 @@ class EffectShadersCodeEditor : public QWidget
         NOTIFY selectedShaderChanged)
 
 public:
-    EffectShadersCodeEditor(
-        const QString &title = Tr::tr("Untitled Editor"), QWidget *parent = nullptr);
+    EffectShadersCodeEditor(const QString &title, QWidget *parent = nullptr);
     ~EffectShadersCodeEditor() override;
 
     void showWidget();