[Development] Let's drop MSVC 2019 for dev (6.8)

[Bob Babcock]

Thiago Macieira <thiago.macieira at intel.com> wrote in
news:2865734.Ex9A2HvPv6 at tjmaciei-mobl5: 

> * because our builds are labelled "msvc2019"

Does the label reflect the compiler used?  (I know 2019 and 2022 are binary 
compatible.)

I haven't bothered to build the most recent 5.15.x open source version, but 
back at 5.15.10, qtwebengine builds would get compile errors with VC2022.  
It was just a few #includes needed in a few routines, but painful given how 
many hours the build would require.

All source code I've needed to work on recently is now on Qt6 and 2022, so 
I guess I personally don't care if you drop 2019.