*/*: Remove expired erlang and elixir ports

The rebar, rebar3 and mix tools are now more than a decade old, and are
the preferred ways to fetch and install specific erlang and elixir
modules, aside from core compilers, documentation, and custom build
tools.

See UPDATING and MOVED for details.

https://www.freebsd.org/status/report-2021-07-2021-09/#_freebsd_erlang_ecosystem_ports_update

archivers/erlang-snappy
converters/erlang-base64url
databases/elixir-calecto
databases/elixir-db_connection
databases/elixir-ecto
databases/elixir-geo
databases/elixir-mariaex
databases/elixir-postgrex
databases/elixir-timex_ecto
databases/erlang-couchbeam
databases/erlang-epgsql
databases/erlang-eredis
devel/elixir-apex
devel/elixir-bson
devel/elixir-cachex
devel/elixir-calendar
devel/elixir-combine
devel/elixir-conform
devel/elixir-connection
devel/elixir-coverex
devel/elixir-crontab
devel/elixir-csv
devel/elixir-decimal
devel/elixir-deppie
devel/elixir-dialyze
devel/elixir-distillery
devel/elixir-estree
devel/elixir-eternal
devel/elixir-exactor
devel/elixir-excoveralls
devel/elixir-exjsx
devel/elixir-exprotobuf
devel/elixir-gen_stage
devel/elixir-gettext
devel/elixir-inflex
devel/elixir-libring
devel/elixir-math
devel/elixir-msgpax
devel/elixir-nadia
devel/elixir-nats
devel/elixir-nimble_csv
devel/elixir-paratize
devel/elixir-plug
devel/elixir-poison
devel/elixir-quantum
devel/elixir-smppex
devel/elixir-timex
devel/elixir-trailing_format_plug
devel/elixir-tzdata
devel/elixir-unsafe
devel/erlang-bbmustache
devel/erlang-certifi
devel/erlang-cuttlefish
devel/erlang-erlware_commons
devel/erlang-gen_smtp
devel/erlang-getopt
devel/erlang-goldrush
devel/erlang-hut
devel/erlang-jobs
devel/erlang-jsx
devel/erlang-katana
devel/erlang-lager
devel/erlang-lager_syslog
devel/erlang-meck
devel/erlang-metrics
devel/erlang-parse_trans
devel/erlang-providers
devel/erlang-ssl_verify_fun
devel/erlang-unicode_util_compat
dns/erlang-idna
misc/elixir-mime
misc/elixir-uuid
misc/erlang-mimerl
misc/erlang-mimetypes
net/elixir-kafka_ex
net/elixir-oauth2
net/erlang-ranch
security/elixir-comeonin
security/elixir-comeonin_i18n
security/elixir-jose
security/erlang-fast_tls
security/erlang-jose
textproc/elixir-earmark
textproc/elixir-funnel
textproc/elixir-sweet_xml
textproc/erlang-edown
textproc/erlang-fast_xml
textproc/erlang-p1_utils
textproc/erlang-yamerl
www/elixir-html_entities
www/elixir-html_sanitize_ex
www/elixir-httpoison
www/elixir-httpotion
www/elixir-joken
www/elixir-maru
www/elixir-phoenix
www/elixir-phoenix_ecto
www/elixir-phoenix_html
www/elixir-phoenix_pubsub
www/elixir-webassembly
www/erlang-cowboy
www/erlang-cowlib
www/erlang-hackney
www/erlang-ibrowse
www/erlang-mochiweb
www/erlang-mochiweb-basho
www/erlang-webmachine

PR: 263694
Reviewed by: olgeni@FreeBSD.org
Approved by: erlang (with hat)
Sponsored by: SkunkWerks, GmbH