Removal of packages blocking Ruby 3.3 transition

[Lucas Kanashiro]

Some packages requiring rebuild because of the Ruby 3.3 transition are FTBFSing and 1) the fix is not straightforward; 2) they are not well maintained upstream. Those are leaf packages and I'd like to request the removal of their sources and binaries from Oracular. More details below:

- ruby-mpi (FTBFS)
  + Last upstream commit from 3 years ago and last release from 2016
    * https://github.com/gfd-dennou-club/ruby-mpi
  + No rdep
  + It was already removed from Debian testing
    * https://tracker.debian.org/news/1553311/ruby-mpi-removed-from-testing/

$ reverse-depends -r oracular src:ruby-mpi
No reverse dependencies found
$ reverse-depends -r oracular src:ruby-mpi -a source
No reverse dependencies found

- ruby-prometheus-client-mmap (FTBFS)
  + Upstream is active but the latest version depend on rust, which we do not
    support yet. And the latest version without rust dependency still does not
    work with Ruby 3.3
  + No rdep.
  + It was already removed from Debian testing
    * https://tracker.debian.org/news/1553613/ruby-prometheus-client-mmap-removed-from-testing/

$ reverse-depends -r oracular src:ruby-prometheus-client-mmap
No reverse dependencies found
$ reverse-depends -r oracular src:ruby-prometheus-client-mmap -a source
No reverse dependencies found

- treil (FTBFS)
  + Unmaintained upstream for many years
    * https://www.unixuser.org/~ueno/software/treil/index.html
  + No rdep.
  + It was already removed from Debian testing
    * https://tracker.debian.org/news/1553842/treil-removed-from-testing/

$ reverse-depends -r oracular src:treil
No reverse dependencies found
$ reverse-depends -r oracular src:treil -a source
No reverse dependencies found

- ruby-gd (FTBFS)
  + Unmaintained upstream for many years, last release from 2008
    * https://rubygems.org/gems/ruby-gd
  + No rdep
  + It was already removed from Debian testing
    * https://tracker.debian.org/news/1553785/ruby-gd-removed-from-testing/

$ reverse-depends -r oracular src:ruby-gd
No reverse dependencies found
$ reverse-depends -r oracular src:ruby-gd -a source
No reverse dependencies found

- ruby-mmap2 (FTBFS)
  + Unmaintained upstream for 7 years (no new commit)
    * https://gitlab.com/gitlab-org/mmap2
  + No rdep
  + It was already removed from Debian testing
    * https://tracker.debian.org/news/1553861/ruby-mmap2-removed-from-testing/

$ reverse-depends -r oracular src:ruby-mmap2
No reverse dependencies found
$ reverse-depends -r oracular src:ruby-mmap2 -a source
No reverse dependencies found

- ruby-nfc (FTBFS)
  + Unmaintained upstream for 6 years (no new commit)
    * https://github.com/tenderlove/nfc/
  + No rdep
  + It was already removed from Debian testing
    * https://tracker.debian.org/news/1553610/ruby-nfc-removed-from-testing/

$ reverse-depends -r oracular src:ruby-nfc
No reverse dependencies found
$ reverse-depends -r oracular src:ruby-nfc -a source
No reverse dependencies found

- ruby-serialport (FTBFS)
  + Unmaintained upstream for 3 years (no new commit)
    * https://github.com/hparra/ruby-serialport/
  + No rdep
  + It was already removed from Debian testing
    * https://tracker.debian.org/news/1553695/ruby-serialport-removed-from-testing/

$ reverse-depends -r oracular src:ruby-serialport
No reverse dependencies found
$ reverse-depends -r oracular src:ruby-serialport -a source
No reverse dependencies found

- subtle (FTBFS)
  + Unmaintained upstream for 4 years (no new commit)
    * http://subforge.org/projects/subtle/wiki (click on "Repository" at the top)
  + No rdep
  + It was already removed from Debian testing
    * https://tracker.debian.org/news/1553951/subtle-removed-from-testing/

$ reverse-depends -r oracular src:subtle
No reverse dependencies found
$ reverse-depends -r oracular src:subtle -a source
No reverse dependencies found

Please, remove source and binaries of the following packages:

- ruby-mpi
- ruby-prometheus-client-mmap
- treil
- ruby-gd
- ruby-mmap2
- ruby-nfc
- ruby-serialport
- subtle