DCE phase 1 - Remove AS references from Installer selection structure

We will discontinue Automotive Suite from sales (actually already in September 2021). The installer download & install selection tree should be changed in subsequent upcoming releases to reflect this change.

In an optimum case, installer feature & module selection logic will not follow our licensing structure but logical software architecture for easier discovery by a developer. E.g. platform support (like Mobile Android OS in Qt AD, or Embedded Android in Qt DC or Android Automotive OS in Qt DCE) is shown where targets are displayed and the developer license is dictating what is visible and what not.

But it is totally up to Installer team to decide the structure visible in Installer. Note also that there is a planned change for new structure for ADP, ADE, DCP and DCE (this one now) for later, in January 2022.

This AS discontinuation and raise of DCE is caused by QTPMO-1394