remove negative steps values, to reduce nwp data a bit

[peterdudfield]

Pull Request

Description

Remove negative step values

How Has This Been Tested?

CI and ran locally

• [ ] Yes

Checklist:

• [ ] My code follows OCF's coding style guidelines
• [ ] I have performed a self-review of my own code
• [ ] I have made corresponding changes to the documentation
• [ ] I have added tests that prove my fix is effective or that my feature works
• [ ] I have checked my code and corrected any misspellings

[codecov[bot]]

Codecov Report

Merging #42 (fcb5e5c) into main (c9d316d) will decrease coverage by 0.22%. The diff coverage is 20.00%.

@@            Coverage Diff             @@
##             main      #42      +/-   ##
==========================================
- Coverage   45.06%   44.84%   -0.22%     
==========================================
  Files          21       21              
  Lines         932      932              
==========================================
- Hits          420      418       -2     
- Misses        512      514       +2     

Impacted Files	Coverage Δ
gradboost_pv/inference/data_feeds.py	37.83% <0.00%> (-1.81%)	:arrow_down:
gradboost_pv/__init__.py	100.00% <100.00%> (ø)

:mega: We’re building smart automated test selection to slash your CI/CD build times. Learn more