chore(ci): remove duplicated workflows in main-cron

[kwannoel]

I hereby agree to the terms of the RisingWave Labs, Inc. Contributor License Agreement.

What's changed and what's your intention?

Seems like a bunch of workflows were duplicated in main-cron. Perhaps changes from #12233 and #12232 were duplicated because of slightly different test headings and different orderings.

> cat ci/workflows/main-cron.yml | grep label: | sort | sed -E 's/ \(release\)//' | uniq -c | grep '[2-9]  '
   2   - label: "S3 source check on AWS (json parser)"
   2   - label: "connector node integration test Java {{matrix.java_version}}"
   2   - label: "e2e java-binding test"
   2   - label: "end-to-end iceberg sink test"
   2   - label: "end-to-end iceberg sink v2 test"
   2   - label: "end-to-end test (parallel, in-memory)"

Checklist

• I have written necessary rustdoc comments
• I have added necessary unit tests and integration tests
• I have added fuzzing tests or opened an issue to track them. (Optional, recommended for new SQL features Sqlsmith: Sql feature generation #7934).
• My PR contains breaking changes. (If it deprecates some features, please create a tracking issue to remove them in the future).
• All checks passed in ./risedev check (or alias, ./risedev c)
• My PR changes performance-critical code. (Please run macro/micro-benchmarks and show the results.)

• My PR contains critical fixes that are necessary to be merged into the latest release. (Please check out the details)

Documentation

• My PR needs documentation updates. (Please use the Release note section below to summarize the impact on users)

Release note

If this PR includes changes that directly affect users or other significant modifications relevant to the community, kindly draft a release note to provide a concise summary of these changes. Please prioritize highlighting the impact these changes will have on users.

[kwannoel]

Timeout of standalone test bumped also.

[kwannoel]

Since it is TLE in main-cron

[fuyufjh]

Thanks!! ❤️

[kwannoel]

This PR seems to have resolved most of the issues with main-cron. Pr fuzz test should be fixed by #12592 . Looking at pulsar test.