[Framework-Team] PLIP 1775: Remove portal_quickinstaller in Plone 6.0

[Alessandro Pisa]

I reviewed it and it looks good.
For the moment I added the review to this secret gist so that we can
comment on it
- https://gist.github.com/ale-rt/c02281561d55564af6794e5cbf6fe513

I would handle the process via email rather than in regular FWT meeting because:
- it is a small one
- it is ready since months
- the next meeting will be in September

If you are fine with it and you give me a green light I will add the
review to this folder
https://github.com/plone/buildout.coredev/tree/6.0/plips/reviews and
communicate that the PLIP is ready to be merged.

Ciao!
-- 
@ale_pisa - http://ale-rt.github.io - http://alepisa.blogspot.com -
https://it.linkedin.com/in/apisa