removed embedding output type arg in grover

[arunppsg]

Pull Request Template

Description

I am removing the embedding_output_type argument from grover as it is not needed and used.

Type of change

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• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
  • In this case, we recommend to discuss your modification on GitHub issues before creating the PR
• Documentations (modification for documents)

Checklist

• My code follows the style guidelines of this project
  • Run yapf -i <modified file> and check no errors (yapf version must be 0.32.0)
  • Run mypy -p deepchem and check no errors
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• I have performed a self-review of my own code
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• I have made corresponding changes to the documentation
• I have added tests that prove my fix is effective or that my feature works
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[rbharath]

Changes look fine to me, but let's briefly discuss offline what the original goal for embedding_output_type was and why we no longer need it before we merge

[arunppsg]

Changes look fine to me, but let's briefly discuss offline what the original goal for embedding_output_type was and why we no longer need it before we merge

They were additional options present in the grover codebase but not used for experiments or the study. We might not need it because their use case is undocumented in the paper.

[rbharath]

LGTM, feel free to merge in once CI is clear. You may need to give it a bump to rerun CI