CMake: Do not ask to rebuild after editing CMakeLists.txt files

This happens automatically now, do not bother the user with that
anymore.

Change-Id: Icc411e74ea5de42037f3718c6b75cc15772a64b9
Reviewed-by: Tim Jenssen <tim.jenssen@theqtcompany.com>

src/plugins/cmakeprojectmanager/cmakeeditor.h

@@ -39,9 +39,6 @@ class CMakeEditor : public TextEditor::BaseTextEditor
     Q_OBJECT
 
 public:
-    CMakeEditor();
-
-    void finalizeInitialization() override;
     QString contextHelpId() const override;
 
     friend class CMakeEditorWidget;