[data.search] Update routes to not accept query

[lukasolson]

Summary

Part of #153726.

Cleans up the search cancelation API (DELETE /internal/search/{strategy}/{id}) to not accept a query (which wasn't used anywhere anyway).

Also cleans up the search submission API (POST /internal/search/{strategy}/{id?}) to not accept a query (which also wasn't used).

[elasticmachine]

Pinging @elastic/kibana-data-discovery (Team:DataDiscovery)

[mattkime]

code changes lgtm

[kibana-ci]

💛 Build succeeded, but was flaky

• Buildkite Build
• Commit: 6b3842b

Failed CI Steps

• FTR Configs #58

Test Failures

• [job] [logs] FTR Configs #58 / lens app - group 3 lens reporting PDF report should be able to download report of the current visualization
• [job] [logs] FTR Configs #58 / lens app - group 3 lens reporting PDF report should enable curl reporting if the visualization is saved
• [job] [logs] FTR Configs #58 / lens app - group 3 lens reporting PDF report should not allow to download reports for incomplete visualization
• [job] [logs] FTR Configs #58 / lens app - group 3 lens reporting PDF report should produce a valid URL for reporting
• [job] [logs] FTR Configs #58 / lens app - group 3 lens reporting PDF report should show a warning message for curl reporting of unsaved visualizations

Metrics [docs]

Unknown metric groups

ESLint disabled line counts

id	before	after	diff
securitySolution	433	436	+3

Total ESLint disabled count

id	before	after	diff
securitySolution	512	515	+3

History

• 💛 Build #119577 was flaky 2d65097

To update your PR or re-run it, just comment with:
@elasticmachine merge upstream

cc @lukasolson

[ppisljar]

lgtm