Remove annoying .slurm.out

[lucpeterson]

https://github.com/LLNL/merlin/blob/0eccc86aa7bb08e414f7e72a66af96aeaf31a89d/merlin/study/script_adapter.py#L681

So I -think- we can remove the annoying .slurm.out, which happens because we inherit from a maestro slurp adapter by hacking this line to something like

new_name = new_name.replace('.slurm','')

not very elegant, but would avoid major refactoring

just parking this idea here