VS: Remove C++ module CompileAs flag table entries for v142 and v143

The `CompileAs` entry in a `.vcxproj` file with values:

* `CompileAsCppModule` for `-interface`
* `CompileAsCppModuleInternalPartition` for `-internalPartition`
* `CompileAsHeaderUnit` for `-exportHeader`

does not cause the corresponding flag to be added to the command line.
Drop the flag table entries so that the flags go to `AdditionalOptions`.

Fixes: #22477