Address feedback to remove superfluous test

tests/command.bats

@@ -529,34 +529,6 @@ DOCKER_STUB_DEFAULT_OPTIONS='--log-level error run --rm --volume \* --volume \*
   rm "${annotation_input}"
 }
 
-@test "runs in docker by default" {
-  export BUILDKITE_PLUGIN_JUNIT_ANNOTATE_ARTIFACTS="junits/*.xml"
-  export BUILDKITE_PLUGIN_JUNIT_ANNOTATE_FAIL_BUILD_ON_ERROR=false
-
-  stub mktemp \
-    "-d \* : mkdir -p '$artifacts_tmp'; echo '$artifacts_tmp'" \
-    "-d \* : mkdir -p '$annotation_tmp'; echo '$annotation_tmp'"
-
-  stub buildkite-agent \
-    "artifact download \* \* : echo Downloaded artifact \$3 to \$4" \
-    "annotate --context \* --style \* : cat >'${annotation_input}'; echo Annotation added with context \$3 and style \$5, content saved"
-
-  stub docker \
-    "${DOCKER_STUB_DEFAULT_OPTIONS} ruby /src/bin/annotate /junits : echo '<details>Failure</details>' && exit 64"
-
-  run "$PWD/hooks/command"
-
-  assert_success
-
-  assert_output --partial "Annotation added with context junit and style error"
-  assert_equal "$(cat "${annotation_input}")" '<details>Failure</details>'
-
-  unstub mktemp
-  unstub buildkite-agent
-  unstub docker
-  rm "${annotation_input}"
-}
-
 @test "does not run in docker when run-in-docker is false" {
   export BUILDKITE_PLUGIN_JUNIT_ANNOTATE_ARTIFACTS="junits/*.xml"
   export BUILDKITE_PLUGIN_JUNIT_ANNOTATE_FAIL_BUILD_ON_ERROR=false