ARROW-6859: [CI][Nightly] Disable docker layer caching for CircleCI t…

…asks

Closes #5617 from kszucs/disable-docker-layer-cache and squashes the following commits:

c73ed60 <Krisztián Szűcs> disable docker layer cache

Authored-by: Krisztián Szűcs <szucs.krisztian@gmail.com>
Signed-off-by: Neal Richardson <neal.p.richardson@gmail.com>

dev/tasks/docker-tests/circle.linux.yml

@@ -20,7 +20,6 @@ jobs:
   build:
     machine:
       image: ubuntu-1604:201903-01
-      docker_layer_caching: true
     steps:
       - run: docker -v
       - run: docker-compose -v