Wizards: Remove settings buttons.

As they do not look nice in the layouts and several
options pages are involved in the case of the form
class wizard.

Reviewed-by: con
Task-number: QTCREATORBUG-2778

src/plugins/designer/cpp/formclasswizardpage.h

@@ -68,7 +68,6 @@ public:
 public slots:
     void setClassName(const QString &suggestedClassName);
     void setPath(const QString &);
-    void slotSettings();
 
 private slots:
     void slotValidChanged();