Clean IVF_FLAT_NM compatible codes

[cydrain]

issue: #30

[sre-ci-robot]

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[cydrain]

/hold

will merge for Milvus 3.0
need do compatible test with Milvus

[mergify]

@cydrain 🔍 Important: PR Classification Needed!

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[cydrain]

/kind improvement

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 75.87%. Comparing base (3c46f4c) to head (73f5315).
Report is 256 commits behind head on main.

❗ Current head 73f5315 differs from pull request most recent head 737daac

Please upload reports for the commit 737daac to get more accurate results.

Additional details and impacted files

@@            Coverage Diff            @@
##           main     #856       +/-   ##
=========================================
+ Coverage      0   75.87%   +75.87%     
=========================================
  Files         0       86       +86     
  Lines         0     6262     +6262     
=========================================
+ Hits          0     4751     +4751     
- Misses        0     1511     +1511     

see 86 files with indirect coverage changes

---- 🚨 Try these New Features:

• Flaky Tests Detection - Detect and resolve failed and flaky tests

[alexanderguzhva]

/lgtm

[liliu-z]

/reopen

[sre-ci-robot]

@liliu-z: Reopened this PR.

In response to this:

/reopen

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[alexanderguzhva]

/lgtm