Remove unused normalizing_util.rs from diskann-providers

[Copilot]

Dead code. normalize_data_file, normalize_data_internal, and normalize_data_internal_no_cblas have zero callers outside their own module.

• Deleted diskann-providers/src/utils/normalizing_util.rs
• Removed mod declaration and pub use re-exports from utils/mod.rs

Part of diskann-providers cruft cleanup (#899).

[Copilot]

Pull request overview

Removes dead normalization utilities from diskann-providers::utils as part of the broader diskann-providers cleanup effort tracked in #899.

Changes:

• Deleted the unused utils/normalizing_util.rs module (including its unit test).
• Removed the mod normalizing_util declaration and pub use re-exports from utils/mod.rs.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
diskann-providers/src/utils/normalizing_util.rs	Deleted unused normalization helpers and their test.
diskann-providers/src/utils/mod.rs	Removed module wiring and public re-exports for the deleted utilities.

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[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.47%. Comparing base (55e157a) to head (0d9c311).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #902      +/-   ##
==========================================
+ Coverage   89.32%   90.47%   +1.15%     
==========================================
  Files         445      444       -1     
  Lines       84095    83986     -109     
==========================================
+ Hits        75116    75990     +874     
+ Misses       8979     7996     -983     

Flag	Coverage Δ
miri	90.47% <ø> (+1.15%)	⬆️
unittests	90.43% <ø> (+1.27%)	⬆️

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see 38 files with indirect coverage changes

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