Disable Sphinx nitpicky and disable Python 2 [skip ci]

Status Job ID Name Coverage
  Build
passed #154660
docker
build_linux_36

00:16:32

72.0%
passed #154661
macosx
build_macosx_36

00:13:22

72.0%
 
  Deploy
passed #154662
deployer
deploy_beta

00:00:38