Remove function that isn't called anywhere

src/plugins/qt4projectmanager/qt4buildconfiguration.cpp

@@ -169,14 +169,6 @@ QString Qt4BuildConfiguration::defaultMakeTarget() const
     return QString::null;
 }
 
-QString Qt4BuildConfiguration::qtDir() const
-{
-    QtVersion *version = qtVersion();
-    if (version)
-        return version->versionInfo().value("QT_INSTALL_DATA");
-    return QString::null;
-}
-
 QtVersion *Qt4BuildConfiguration::qtVersion() const
 {
     return QtVersionManager::instance()->version(qtVersionId());

src/plugins/qt4projectmanager/qt4buildconfiguration.h

@@ -63,8 +63,6 @@ public:
 
     virtual QString buildDirectory() const;
 
-    // returns the qtdir (depends on the current QtVersion)
-    QString qtDir() const;
     //returns the qtVersion, if the project is set to use the default qt version, then
     // that is returned
     // to check wheter the project uses the default qt version use qtVersionId