Revert "[ci] debug docker timing test"

This reverts commit 85cef289.
6 jobs for issue-55 in 37 minutes and 58 seconds (queued for 9 seconds)
Status Job ID Name Coverage
  Build
passed #135025
docker
build_linux_27

00:06:04

60.0%
passed #135026
docker
build_linux_36

00:05:55

60.0%
passed #135027
macosx
build_macosx_27

00:12:20

60.0%
passed #135028
macosx
build_macosx_36

00:11:59

60.0%
 
  Docker
passed #135029
docker-build
docker_linux_27

00:25:38

70.0%
passed #135030
docker-build
docker_linux_36

00:24:47

70.0%