chore: Drop tags auto-set by the SDK

[sentrivana]

Description

Many of the set_tag calls were only present in non-span-streaming branches, which will be completely removed anyway, and we've already migrated those tags, if applicable, to span attributes in the scope of span first.

Issues

Closes https://linear.app/getsentry/issue/PY-1940/remove-tags-auto-set-by-the-sdk

[linear-code]

PY-1940

[github-actions]

Codecov Results 📊

✅ 110594 passed | ⏭️ 5428 skipped | Total: 116022 | Pass Rate: 95.32% | Execution Time: 384m 4s

📊 Comparison with Base Branch

Metric	Change
Total Tests	📉 -8574
Passed Tests	📉 -7270
Failed Tests	—
Skipped Tests	📉 -1304

All tests are passing successfully.

✅ Patch coverage is 100.00%. Project has 2257 uncovered lines.
✅ Project coverage is 90.55%. Comparing base (base) to head (head).

Coverage diff

@@            Coverage Diff             @@
##          main       #PR       +/-##
==========================================
+ Coverage    90.25%    90.55%     +0.3%
==========================================
  Files          193       185        -8
  Lines        25441     23878     -1563
  Branches      9352      8794      -558
==========================================
+ Hits         22960     21621     -1339
- Misses        2481      2257      -224
- Partials      1436      1377       -59

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