ios: single xcode and cleaned configurations

Use just one xcode, namely the one of xcode-select (like qmake)
cleaned iosconfigurations:
 * cleaned now unneded xcode paths
 * using static methods, removed IosConfig

Change-Id: Icc4d1bc1063a5f65230736a47b4ca9b139fa79e0
Reviewed-by: hjk <hjk121@nokiamail.com>

src/plugins/ios/iosconfigurations.h

@@ -45,28 +45,16 @@ QT_END_NAMESPACE
 namespace Ios {
 namespace Internal {
 
-class IosConfig
-{
-public:
-    IosConfig();
-    IosConfig(const QSettings &settings);
-    void save(QSettings &settings) const;
-
-    Utils::FileName developerPath;
-    bool ignoreAllDevices;
-};
-
 class IosConfigurations : public QObject
 {
     Q_OBJECT
 
 public:
-    static IosConfigurations &instance();
-    IosConfig config() const { return m_config; }
-    void setConfig(const IosConfig &config);
+    static IosConfigurations *instance();
+    static bool ignoreAllDevices();
+    static void setIgnoreAllDevices(bool ignoreDevices);
+    static Utils::FileName developerPath();
 
-    QStringList sdkTargets();
-    void updateSimulators();
 signals:
     void updated();
 
@@ -77,10 +65,12 @@ private:
     IosConfigurations(QObject *parent);
     void load();
     void save();
+    void updateSimulators();
+    static void setDeveloperPath(const Utils::FileName &devPath);
 
-    static IosConfigurations *m_instance;
-    IosConfig m_config;
     QTimer m_updateAvailableDevices;
+    Utils::FileName m_developerPath;
+    bool m_ignoreAllDevices;
 };
 
 } // namespace Internal