test: Remove more transaction tests

[sentrivana]

Remove transaction tests from some test suites where the integration itself doesn't have transaction code (anymore). These are:

• feature flag integrations
• Tornado
  • probably because of an automatic merge of master to the major branch, new instances of two tests were introduced that only differ from existing tests by name (test_request_body_data_collection_span_streaming, test_oversized_request_body_not_annotated_data_collection_span_streaming) -- removed those
• stdlib (http) -> just a rename

[github-actions]

Codecov Results 📊

✅ 108120 passed | ⏭️ 5338 skipped | Total: 113458 | Pass Rate: 95.3% | Execution Time: 360m 6s

📊 Comparison with Base Branch

Metric	Change
Total Tests	📉 -12364
Passed Tests	📉 -10940
Failed Tests	—
Skipped Tests	📉 -1424

All tests are passing successfully.

✅ Patch coverage is 100.00%. Project has 2246 uncovered lines.
✅ Project coverage is 90.53%. Comparing base (base) to head (head).

Coverage diff

@@            Coverage Diff             @@
##          main       #PR       +/-##
==========================================
+ Coverage    90.30%    90.53%    +0.23%
==========================================
  Files          193       185        -8
  Lines        25601     23705     -1896
  Branches      9436      8734      -702
==========================================
+ Hits         23116     21459     -1657
- Misses        2485      2246      -239
- Partials      1435      1365       -70

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