chore: remove the global::shutdown_tracer_provider function

[pitoniak32]

related to: #1961

Changes

Removing the opentelemetry::global::shutdown_tracer_provider(). This should no longer be in the API, making tracing consistent with logs and metrics.

Migration Guide

the opentelemetry::global::shutdown_tracer_provider() is no longer available, to shutdown the TracerProvider properly you will need to have access to the provider and call the shutdown() function.

example:

    let provider = init_tracer();
-   opentelemetry::global::shutdown_tracer_provider();
+   provider.shutdown()?;

Merge requirement checklist

• CONTRIBUTING guidelines followed
• Unit tests added/updated (if applicable)
• Appropriate CHANGELOG.md files updated for non-trivial, user-facing changes
• Changes in public API reviewed (if applicable)

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 33 lines in your changes missing coverage. Please review.

Project coverage is 79.4%. Comparing base (b35c0d6) to head (b93e711).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
opentelemetry-sdk/src/trace/runtime_tests.rs	0.0%	22 Missing ⚠️
opentelemetry-zipkin/src/exporter/mod.rs	0.0%	11 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##            main   #2369     +/-   ##
=======================================
- Coverage   79.5%   79.4%   -0.1%     
=======================================
  Files        123     123             
  Lines      21473   21479      +6     
=======================================
- Hits       17078   17064     -14     
- Misses      4395    4415     +20     

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[lalitb]

not related to this PR - but ZipkinPipelineBuilder should be replaced with ZipkinBuilder and the implementation should be made consistent to OTLP as done in #2221. The crate be only responsible to provide builder to create Zipkin exporter, and no convenience wrappers to create TracerProvider / Processors.

[lalitb]

Thanks, nicely done. Can you also update the CHANGELOG for opentelemetry crate as this is a breaking change. CI lint failure doesn't look to be related to this PR, but coming from the latest stable toolchain v1.83 released on 28th Nov. I will have a look if no one is checking.

[pitoniak32]

Thanks, nicely done. Can you also update the CHANGELOG for opentelemetry crate as this is a breaking change.

I'll update as soon as I'm at my computer again 👍

[cijothomas]

LGTM with a changelog entry for the breaking change. Also PR desc can be updated to show how users can migrate.