chore(asgi): Remove transaction-based tracing

[sentrivana]

The removed ...request_data... tests all have a ...request_attributes... span streaming counterpart.

The removed test_asgi_transaction_request_body_data_collection is covered by test_asgi_request_body_data_collection.

[github-actions]

Codecov Results 📊

✅ 71534 passed | ❌ 1 failed | ⏭️ 3370 skipped | Total: 74905 | Pass Rate: 95.5% | Execution Time: 220m 36s

📊 Comparison with Base Branch

Metric	Change
Total Tests	📉 -64131
Passed Tests	📉 -60371
Failed Tests	📈 +1
Skipped Tests	📉 -3761

➕ New Tests (1)

View new tests

• test_cache_spans_item_size
  • File: tests.integrations.django.test_cache_module
  • Status: ❌ Failing

❌ Failed Tests

test_cache_spans_item_size

File: tests.integrations.django.test_cache_module
Suite: py3.12-django-v4.2.30
Error: tests/integrations/django/test_cache_module.py:526: in test_cache_spans_item_size assert not spans[0]["attributes"]["cache.hit"] E assert not True

Stack Trace

tests/integrations/django/test_cache_module.py:526: in test_cache_spans_item_size
    assert not spans[0]["attributes"]["cache.hit"]
E   assert not True

❌ Patch coverage is 79.17%. Project has 2288 uncovered lines.
❌ Project coverage is 89.99%. Comparing base (868323a) to head (d750b3a).

Files with missing lines (1)

File	Patch %	Lines
sentry_sdk/integrations/asgi.py	79.17%	⚠️ 5 Missing and 1 partials

Coverage diff

@@            Coverage Diff             @@
##        master       #PR       +/-##
==========================================
- Coverage    90.21%    89.99%    -0.22%
==========================================
  Files          193       185        -8
  Lines        25788     22847     -2941
  Branches      9530      8334     -1196
==========================================
+ Hits         23261     20559     -2702
- Misses        2527      2288      -239
- Partials      1432      1335       -97

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