ci: kill off unused build/test logs docker redirection

The logs are not neither used, nor accessible - kill them.

Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Signed-off-by: Elie Tournier <elie.tournier@collabora.com>

ci/.gitlab-ci.yml

@@ -41,7 +41,6 @@ build docker image:
              --build-arg MESA_REPO=$MESA_REPO
              -t $CI_REGISTRY_IMAGE
              --cache-from $CI_REGISTRY_IMAGE:latest ci
-             2>&1 | tee results/docker_build_log.txt;
 
     - docker history $CI_REGISTRY_IMAGE:latest