Revert feature extraction

[JulienPeloton]

IMPORTANT: Please create an issue first before opening a Pull Request.
Linked to issue(s): Closes #708

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
0.0% Duplication

[codecov]

Codecov Report

Patch coverage: 100% and no project coverage change.

Comparison is base (58f2838) 94% compared to head (4d6d9e4) 94%.

❗ Current head 4d6d9e4 differs from pull request most recent head 36b8a89. Consider uploading reports for the commit 36b8a89 to get more accurate results

Additional details and impacted files

@@          Coverage Diff          @@
##           master   #709   +/-   ##
=====================================
  Coverage      94%    94%           
=====================================
  Files          19     19           
  Lines         967    967           
=====================================
  Hits          912    912           
  Misses         55     55           

Impacted Files	Coverage Δ
fink_broker/science.py	100% <100%> (ø)

☔ View full report in Codecov by Sentry.
📢 Do you have feedback about the report comment? Let us know in this issue.