Utils: Remove unneeded namespace qualifications

Change-Id: Iacab8410ab4d3b63f96e7541b450e3cc729ab662
Reviewed-by: Daniel Teske <daniel.teske@digia.com>
Reviewed-by: hjk <hjk121@nokiamail.com>

src/libs/utils/detailswidget.h

@@ -73,7 +73,7 @@ public:
     QWidget *widget() const;
     QWidget *takeWidget();
 
-    void setToolWidget(Utils::FadingPanel *widget);
+    void setToolWidget(FadingPanel *widget);
     QWidget *toolWidget() const;
 
     void setSummaryFontBold(bool b);