CMake: Semi-automatic cleanups

* Shorten header guards
* Use override and auto where possible
* Remove useless destructors, etc.
* Remove private slots sections, unify private: sections
* Use member initialization where it makes sense

Change-Id: I00eaf6d706adc16859176d1b68c631d3336bb39f
Reviewed-by: Tim Jenssen <tim.jenssen@theqtcompany.com>

src/plugins/cmakeprojectmanager/cmakeprojectplugin.cpp

@@ -52,14 +52,6 @@
 
 using namespace CMakeProjectManager::Internal;
 
-CMakeProjectPlugin::CMakeProjectPlugin()
-{
-}
-
-CMakeProjectPlugin::~CMakeProjectPlugin()
-{
-}
-
 bool CMakeProjectPlugin::initialize(const QStringList & /*arguments*/, QString *errorMessage)
 {
     Q_UNUSED(errorMessage)