Deleted ContentTranslation and UniversalLanguageSelector jobs

The jobs are moved to
https://integration.wikimedia.org/ci/view/BrowserTests/

Paired with: Amir Aharoni
Deleted Flow, MobileFrontend, and VisualEditor jobs that run at en.wikipedia.beta.wmflabs.org

Paired with: Chris McMahon
Delete CentralAuth, VisualEditor and WikiLove jobs
Deleted the last VisualEditor job
Deleted the last two MobileFrontend jobs

Paired with: Chris McMahon
Moved a couple of UploadWizard jobs to Wikimedia Jenkins

Paired with: Chris McMahon