Remove stuff that was deprecated for 2.5.0

[n2ygk]

Description of the Change

Removes deprecations that were warned would be removed in 2.5.0

Checklist

• [x] PR only contains one change (considered splitting up PR)
• [ ] unit-test added
• [ ] documentation updated
• [x] CHANGELOG.md updated (only for user relevant changes)
• [x] author name in AUTHORS

[n2ygk]

@dopry @tonial I took a crack at removing the deprecations you had added. Please take a look and make sure I didn't mess it up.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 97.42%. Comparing base (560f84d) to head (24ed763). Report is 14 commits behind head on master.

:exclamation: Current head 24ed763 differs from pull request most recent head 692ab13

Please upload reports for the commit 692ab13 to get more accurate results.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #1425 +/- ## ========================================== - Coverage 97.56% 97.42% -0.14% ========================================== Files 32 32 Lines 2132 2096 -36 ========================================== - Hits 2080 2042 -38 - Misses 52 54 +2 ```

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[dopry]

Sorry work got the better for me for a hearbeat. LGTM.

[n2ygk]

ugh codespell is messing us up.