Remove nucliadb_performance

[lferran]

Description

It's not used, so better not have to maintain it

How was this PR tested?

Describe how you tested this PR.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 84.04%. Comparing base (04d4073) to head (85eba5c).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2875      +/-   ##
==========================================
- Coverage   84.08%   84.04%   -0.05%     
==========================================
  Files         471      471              
  Lines       34794    34794              
  Branches    10602    10602              
==========================================
- Hits        29256    29242      -14     
- Misses       4988     5001      +13     
- Partials      550      551       +1     

Flag	Coverage Δ
nidx	77.63% <ø> (ø)
nucliadb	75.40% <ø> (-0.09%)	⬇️
nucliadb-ingest	40.95% <ø> (ø)
nucliadb-reader	42.69% <ø> (ø)
nucliadb-search	44.33% <ø> (ø)
nucliadb-standalone	47.32% <ø> (ø)
nucliadb-train	45.48% <ø> (ø)
nucliadb-writer	46.85% <ø> (ø)
nucliadb_dataset	55.45% <ø> (ø)
nucliadb_models	84.82% <ø> (ø)
nucliadb_sdk	89.67% <ø> (ø)
nucliadb_telemetry	86.56% <ø> (ø)
nucliadb_utils	83.75% <ø> (ø)

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