Unused local variable

[DimitriPapadopoulos]

The value assigned to local variable n_columns is never used.

[codecov[bot]]

Codecov Report

Merging #297 (3328140) into master (aee6274) will decrease coverage by 0.00%. The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #297      +/-   ##
==========================================
- Coverage   82.97%   82.96%   -0.01%     
==========================================
  Files         137      137              
  Lines        4680     4679       -1     
==========================================
- Hits         3883     3882       -1     
  Misses        797      797              

Impacted Files	Coverage Δ
rampwf/prediction_types/combined.py	97.67% <ø> (-0.06%)	:arrow_down:

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[agramfort]

thx @DimitriPapadopoulos