fix: delete hanging file

[cpaniaguam]

test/_test-track.jl was moved to IFTPipeline and is no longer needed here.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (319b060) 90.48% compared to head (ceeadb8) 90.48%.
Report is 7 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #351   +/-   ##
=======================================
  Coverage   90.48%   90.48%           
=======================================
  Files          29       29           
  Lines         904      904           
=======================================
  Hits          818      818           
  Misses         86       86           

Files	Coverage Δ
src/tracker/tracker.jl	100.00% <100.00%> (ø)

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