Remove device attribute from schemas

[AlyssaCote]

This PR removes device from the schemas, MessageHandler, and tests.

[codecov]

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Additional details and impacted files

@@              Coverage Diff               @@
##             mli-feature     #619   +/-   ##
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  Coverage               ?   63.50%           
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  Files                  ?       91           
  Lines                  ?     6486           
  Branches               ?        0           
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  Hits                   ?     4119           
  Misses                 ?     2367           
  Partials               ?        0           

Files	Coverage Δ
.../_core/mli/infrastructure/control/workermanager.py	18.10% <ø> (ø)
smartsim/_core/mli/infrastructure/worker/worker.py	78.20% <ø> (ø)
smartsim/_core/mli/message_handler.py	76.14% <ø> (ø)

[ankona]

There is a test here that is likely silently failing because it provides an unexpected keyword arg. At minimum, you should just have to remove device=expected_device, but could also remove from the commented out tests in test_integrated_torch_worker.py, too

[ankona]

LGTM!