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/cmakeindenter.h

@@ -41,9 +41,6 @@ namespace Internal {
 class CMAKE_EXPORT CMakeIndenter : public TextEditor::Indenter
 {
 public:
-    CMakeIndenter();
-    virtual ~CMakeIndenter() {}
-
     bool isElectricCharacter(const QChar &ch) const override;
     void indentBlock(QTextDocument *doc, const QTextBlock &block, const QChar &typedChar, const TextEditor::TabSettings &tabSettings) override;
 };