Apply the condition to remove unwanted objects with null features

[JulienPeloton]

IMPORTANT: Please create an issue first before opening a Pull Request.
Linked to issue(s): Closes #347

What changes were proposed in this pull request?

Apply the condition to remove unwanted objects with null features in the Early SN Ia module.

How was this patch tested?

Manually

[codecov-commenter]

Codecov Report

Attention: 1 lines in your changes are missing coverage. Please review.

Comparison is base (faff14b) 53.44% compared to head (32fde57) 53.40%.

❗ Current head 32fde57 differs from pull request most recent head e28f1e5. Consider uploading reports for the commit e28f1e5 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #348      +/-   ##
==========================================
- Coverage   53.44%   53.40%   -0.04%     
==========================================
  Files          33       33              
  Lines        1510     1511       +1     
==========================================
  Hits          807      807              
- Misses        703      704       +1     

Files	Coverage Δ
fink_science/__init__.py	100.00% <100.00%> (ø)
fink_science/random_forest_snia/processor.py	30.92% <0.00%> (-0.33%)	⬇️

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