chore: Drop more deprecated stuff

[sentrivana]

Changes:

• remove deprecated max_spans option of LangchainIntegration
• remove deprecated sentry_sdk.init() context manager
• remove deprecated configure_debug_hub
• remove deprecated Baggage.from_options()
• remove deprecated Transport.capture_event()
• remove deprecated FunctionTransport
• the Scope.trace_propagation_meta function no longer accepts a span as argument
• remove deprecated direct assignment to Scope.level
• remove deprecated direct assignment to Scope.user
• remove deprecated Scope.iter_headers

Closes https://linear.app/getsentry/issue/PY-1935/drop-deprecated-stuff

[linear-code]

PY-1935

[github-actions]

Codecov Results 📊

✅ 110471 passed | ⏭️ 5428 skipped | Total: 115899 | Pass Rate: 95.32% | Execution Time: 373m 24s

📊 Comparison with Base Branch

Metric	Change
Total Tests	📉 -9128
Passed Tests	📉 -7823
Failed Tests	📉 -1
Skipped Tests	📉 -1304

➖ Removed Tests (1)

View removed tests

• test_continuous_profiler_auto_start_and_stop_sampled[non-experiment-gevent]
  • File: tests.profiler.test_continuous_profiler

All tests are passing successfully.

✅ Patch coverage is 100.00%. Project has 2238 uncovered lines.
✅ Project coverage is 90.59%. Comparing base (base) to head (head).

Coverage diff

@@            Coverage Diff             @@
##          main       #PR       +/-##
==========================================
+ Coverage    90.24%    90.59%    +0.35%
==========================================
  Files          193       185        -8
  Lines        25474     23775     -1699
  Branches      9378      8756      -622
==========================================
+ Hits         22988     21537     -1451
- Misses        2486      2238      -248
- Partials      1431      1368       -63

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[cursor]

Cursor Bugbot has reviewed your changes and found 1 potential issue.

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^{Reviewed by Cursor Bugbot for commit 6f4bd53. Configure here.}

[cursor]

Callable transports silently send events

High Severity

After function transports were removed, a callable passed as transport is no longer recognized. make_transport then falls through and constructs the default HttpTransport whenever a DSN is set. Callers that still pass a function (for example a no-op or a list-append in tests) will silently send real events to Sentry instead of failing. The ClientConstructor type still lists Callable[[Event], None] as valid, so type checkers will not catch this.

 

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[ericapisani]

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