remove unused show_my_data Search API parameter

[pdurbin]

What this PR does / why we need it:

Having this unused parameter lying around is confusing.

Which issue(s) this PR closes:

• None. Relates to Analysis Spike - Explore current APIs for the SPA My Data Page and create action items if required #11287

Special notes for your reviewer:

In the issue I linked to some old related commits and issues if you're interested.

Suggestions on how to test this:

• Make sure API tests pass.
• You could try passing the parameter. It shouldn't change anything.

Does this PR introduce a user interface change? If mockups are available, please link/include them here:

Is there a release notes update needed for this change?:

Yes, included.

Additional documentation:

https://dataverse-guide--11375.org.readthedocs.build/en/11375/api/changelog.html

[github-actions]

📦 Pushed preview images as

ghcr.io/gdcc/dataverse:11287-show-my-data

ghcr.io/gdcc/configbaker:11287-show-my-data

🚢 See on GHCR. Use by referencing with full name as printed above, mind the registry name.

[coveralls]

coverage: 22.729% (+0.001%) from 22.728%
when pulling 7a0a3a1 on 11287-show_my_data
into c4f3d76 on develop.

[GPortas]

@pdurbin The PR makes sense within the scope of removing the unused parameter, but it doesn't close issue #11287. We still need a decision on which APIs to use for implementing the My Data page in the SPA and should create new issues if necessary to extend the API.

[pdurbin]

@GPortas ok, I marked this PR as only related to the issue and put that issue back on the board for continued analysis. Thanks.

[ofahimIQSS]

merging PR looks good from my end