Rm old list of critical services (#2695)

This list was useful when we had to triage service tests, though happily that day is no longer :)

lib/project/critical-services.yml

@@ -1,47 +0,0 @@
-# Subjective prioritization of critical services. If you think some are
-# missing, open a PR to add your own list.
-
-paulmelnikow:
-  - cdnjs
-  - chocolatey
-  - circleci
-  - clojars
-  - cocoapods
-  - codeship
-  - david
-  - docker
-  - dotnet.myget
-  - myget
-  - nuget
-  - dub
-  - gem
-  - hackage
-  - homebrew
-  - itunes
-  - jira
-  - uptimerobot
-  - amo
-  - ansible
-  - appveyor
-  - bitbucket
-  - chrome-web-store
-  - codeclimate
-  - coveralls
-  - discord
-  - eclipse-marketplace
-  - elm-package
-  - github
-  - hexpm
-  - jenkins
-  - luarocks
-  - matrix
-  - maven-central
-  - node
-  - nom
-  - packagist
-  - pypi
-  - suggest
-  - twitter
-  - website
-  - vscode-marketplace
-  - wordpress