pyspeech: get_cmd_cwd issue (same as #276)

[shashank-gv]

steps to recreate:

ml install pyspeech
ml configure pyspeech
ml demo pyspeech

Full error message:

 ml demo pyspeech
Traceback (most recent call last):
  File "/home/user/.mlhub/pyspeech/demo.py", line 17, in <module>
    from mlhub.utils import get_cmd_cwd
ImportError: cannot import name 'get_cmd_cwd' from 'mlhub.utils' (/home/user/.local/lib/python3.10/site-packages/mlhub/utils.py)

Same as #276