Removing old QtMCU releases breaks the installation

When uninstalling older versions of QtMCUs or 3rdparty components like compilers and SDKs, all entries from ./Tools/sdktool/share/qtcreator/QtProject/QtCreator.ini
are removed, even if there is still a version available. This makes QtCreator thinks it is missing and silently fails without errors.

eg.

• installing QtMCU 2.5.0, and removing 2.4.0 makes QtCreator think to QtMCUs is installed
• Removing armgcc9, while armgcc10 is still installed, makes QtCreator think the compiler is missing.
• Removing an old  3rd party board SDK, while still keeping a newer version make QtCreator think it is not installed anymore