Azure: Don't install pypi's docker

Ubuntu 20.04's docker meets the requirement(4+).

Signed-off-by: Stanislav Levin <slev@altlinux.org>
Reviewed-By: Alexander Bokovoy <abokovoy@redhat.com>

ipatests/azure/templates/test-jobs.yml

@@ -18,8 +18,6 @@ steps:
     sudo add-apt-repository -y ppa:abbra/freeipa-libseccomp
     sudo apt-get update
     sudo apt-get install -y libseccomp2
-    # ubuntu's one is too old: different API
-    python3 -m pip install docker --user
   displayName: Install Host's tests requirements
 
 - script: |