Remove inexistent SpinalConfig.shell --debug option

[mrcmry]

My understanding form the code of shell here:

https://github.com/SpinalHDL/SpinalHDL/blob/00f4523f966038fa77d8a7b4955587556efff351/core/src/main/scala/spinal/core/Spinal.scala#L314

Is that the --debug option doesn't exist. I also get the error [error] Error: Unknown option --debug when using it.

I searched in the code for it but I think it doesn't exist (no arg in SpinalConfig). So I suppose it's an error in the doc.

This PR remove the --debug from the doc to avoid confusion.

By the way, my understanding is there is no way to increase HDL error verbosity (not only the verbose = true argument). Or do I miss something ?

[Dolu1990]

Hi,

Yes you are right, that is some legacy doc

Thanks ^^