Fix log-softmax unused issue

[j3soon]

Fixes: #800

Description

Checklist

• The issue that is being fixed is referred in the description (see above "Fixes #ISSUE_NUMBER")
• Only one issue is addressed in this pull request
• Labels from the issue that this PR is fixing are added to this pull request
• No unnecessary issues are included into this pull request.

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[svekars]

Please resolve the conflict

[svekars]

Will mark as docathon contribution.

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• pyspelling (gh)

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