ProjectExplorer: Sprinkle overrides over the code

Sprinkle overrides over code derived from classes in ProjectExplorer

Change-Id: Ia4cc25649f7dc00b0ea126d8176a59afbc5ed574
Reviewed-by: hjk <hjk@theqtcompany.com>

src/plugins/qbsprojectmanager/qbsbuildconfiguration.cpp

@@ -358,9 +358,6 @@ QbsBuildConfigurationFactory::QbsBuildConfigurationFactory(QObject *parent) :
     IBuildConfigurationFactory(parent)
 { }
 
-QbsBuildConfigurationFactory::~QbsBuildConfigurationFactory()
-{ }
-
 bool QbsBuildConfigurationFactory::canHandle(const Target *t) const
 {
     return qobject_cast<Internal::QbsProject *>(t->project());