Remove unnecessary **kwargs in function signatures

[mroeschke]

Description

Helps makes function signatures stricter to avoid typo inputs being accepted into signatures

Checklist

• I am familiar with the Contributing Guidelines.
• New or existing tests cover these changes.
• The documentation is up to date with these changes.

[vyasr]

@mroeschke can you update this PR and fix the copyrights? I'd like to see a full test run before approving just to be sure nothing was relying on passing in unused arguments for args/kwargs to toss away.

[vyasr]

/merge