revert automatically binding storage mounts in build phase. closes #2254

tests/unit/20_storage.bats

@@ -38,18 +38,3 @@ teardown() {
   assert_output "Mount path does not exist."
   assert_failure
 }
-
-@test "(storage) storage:mount (dockerfile)" {
-  run /bin/bash -c "dokku storage:mount $TEST_APP /tmp/mount:/mount"
-  echo "output: "$output
-  echo "status: "$status
-  assert_success
-
-  deploy_app dockerfile
-
-  CID=$(< $DOKKU_ROOT/$TEST_APP/CONTAINER.web.1)
-  run /bin/bash -c "docker inspect -f '{{ .HostConfig.Binds }}' $CID"
-  echo "output: "$output
-  echo "status: "$status
-  assert_output "[/tmp/mount:/mount]"
-}