Drop startup script's workflow copy step
Drop startup script's workflow copy step

As the Docker image should now handle copying of workflows in the
entrypoint, there should be no need for a separate step that happens
before starting up the container. As such cut this workflow copying step
from the startup script, simplifying it a bit.

nanshe-org/docker_nanshe_workflow,nanshe-org/docker_nanshe_workflow,DudLab/docker_nanshe_workflow,DudLab/docker_nanshe_workflow