Remove checks for missing root nodes.

[tobiasraabe]

No description provided.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (2eb480e) 94.47% compared to head (20cb3c1) 94.43%.

❗ Current head 20cb3c1 differs from pull request most recent head b5687f2. Consider uploading reports for the commit b5687f2 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #480      +/-   ##
==========================================
- Coverage   94.47%   94.43%   -0.04%     
==========================================
  Files         104      104              
  Lines        9065     9005      -60     
==========================================
- Hits         8564     8504      -60     
  Misses        501      501              

Flag	Coverage Δ
end_to_end	81.19% <84.78%> (-0.03%)	⬇️
integration	39.86% <30.43%> (+0.09%)	⬆️
unit	66.58% <47.82%> (-0.54%)	⬇️

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Files	Coverage Δ
src/_pytask/dag.py	100.00% <100.00%> (ø)
src/_pytask/dag_command.py	66.15% <100.00%> (-0.26%)	⬇️
src/_pytask/execute.py	97.32% <100.00%> (+0.04%)	⬆️
src/_pytask/hookspecs.py	100.00% <ø> (ø)
src/_pytask/session.py	93.93% <100.00%> (ø)
tests/test_dag.py	96.72% <100.00%> (-1.11%)	⬇️
tests/test_execute.py	99.22% <100.00%> (+0.06%)	⬆️
tests/test_skipping.py	100.00% <100.00%> (ø)
tests/test_tree_util.py	100.00% <100.00%> (ø)

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