Revert "Send spans_created telemetry metric"

[realFlowControl]

Reverts #2577

[codecov-commenter]

Codecov Report

Merging #2612 (dfa7f9f) into master (633c5ad) will decrease coverage by 12.22%.
The diff coverage is 100.00%.

Additional details and impacted files

@@              Coverage Diff              @@
##             master    #2612       +/-   ##
=============================================
- Coverage     76.53%   64.31%   -12.22%     
  Complexity     2609     2609               
=============================================
  Files           217      217               
  Lines         23318    23267       -51     
=============================================
- Hits          17846    14965     -2881     
- Misses         5472     8302     +2830     

Flag	Coverage Δ
tracer-extension	78.64% <ø> (-0.07%)	⬇️
tracer-php	46.78% <100.00%> (-27.08%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
ext/ddtrace.c	73.08% <ø> (-0.19%)	⬇️
ext/ddtrace.h	62.50% <ø> (ø)
ext/ddtrace_arginfo.h	100.00% <ø> (ø)
ext/span.c	92.99% <ø> (-0.02%)	⬇️
ext/span.h	100.00% <ø> (ø)
ext/telemetry.c	100.00% <ø> (+1.17%)	⬆️
src/DDTrace/OpenTelemetry/Span.php	86.03% <ø> (-0.08%)	⬇️
src/DDTrace/OpenTracer/Tracer.php	85.96% <100.00%> (-0.93%)	⬇️
src/DDTrace/OpenTracer1/Tracer.php	85.71% <100.00%> (-0.96%)	⬇️

... and 19 files with indirect coverage changes

---

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[pr-commenter]

Benchmarks

Benchmark execution time: 2024-04-04 11:03:04

Comparing candidate commit dfa7f9f in PR branch revert-2577-lv/tracer-telemetry with baseline commit 633c5ad in branch master.

Found 5 performance improvements and 0 performance regressions! Performance is the same for 176 metrics, 1 unstable metrics.

scenario:SpanBench/benchDatadogAPI-opcache

• 🟩 execution_time [-932.518ns; -628.682ns] or [-5.243%; -3.535%]

scenario:SymfonyBench/benchSymfonyBaseline

• 🟩 execution_time [-354.504µs; -198.176µs] or [-5.922%; -3.310%]

scenario:SymfonyBench/benchSymfonyBaseline-opcache

• 🟩 execution_time [-276.250µs; -196.110µs] or [-4.545%; -3.227%]

scenario:SymfonyBench/benchSymfonyOverhead

• 🟩 execution_time [-798.612µs; -626.088µs] or [-10.168%; -7.971%]

scenario:SymfonyBench/benchSymfonyOverhead-opcache

• 🟩 execution_time [-688.669µs; -565.251µs] or [-8.697%; -7.139%]