Utils: Remove FileWizard class altogether

This fixes the regression where two Location pages were added
before.

Change-Id: Ic3241d707ad8dcf6fc3063bb4613dce49001e196
Reviewed-by: Orgad Shaneh <orgads@gmail.com>

src/plugins/coreplugin/basefilewizard.cpp

@@ -30,5 +30,5 @@
 #include "basefilewizard.h"
 
 Core::BaseFileWizard::BaseFileWizard(QWidget *parent) :
-    Utils::FileWizardDialog(parent)
+    Utils::Wizard(parent)
 { }