chore: remove NoRecordingSpan

[Flarna]

NoRecordingSpan doesn't add anything on top of NoopSpan and it's only used at one few places.

Remove it in favor of NoopSpan.

Nice side effect is that instrumentation http is no longer depending on core.

[codecov]

Codecov Report

Merging #1900 (fda147f) into main (2f0d612) will decrease coverage by 0.06%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main    #1900      +/-   ##
==========================================
- Coverage   92.75%   92.68%   -0.07%     
==========================================
  Files         173      172       -1     
  Lines        5973     5963      -10     
  Branches     1269     1268       -1     
==========================================
- Hits         5540     5527      -13     
- Misses        433      436       +3     

Impacted Files	Coverage Δ
...ges/opentelemetry-instrumentation-http/src/http.ts	94.69% <100.00%> (-0.86%)	⬇️
packages/opentelemetry-plugin-http/src/http.ts	97.31% <100.00%> (-0.02%)	⬇️
packages/opentelemetry-tracing/src/Tracer.ts	100.00% <100.00%> (ø)
...etry-exporter-prometheus/src/PrometheusExporter.ts	91.04% <0.00%> (-1.50%)	⬇️