fix(tests): do not attempt to delete tmp file

[jeertmans]

Because Windows does not allow for that

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 88.81%. Comparing base (3e176e2) to head (73944ac).

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #82   +/-   ##
=======================================
  Coverage   88.81%   88.81%           
=======================================
  Files          35       35           
  Lines        1252     1252           
=======================================
  Hits         1112     1112           
  Misses        140      140           

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[github-actions]

Rust benchmark results:

group                                                       before                                 changes
-----                                                       ------                                 -------
complete_graph_all_paths/iter                               1.00     23.2±0.32ns 41.2 MElem/sec    1.00     23.2±0.59ns 41.1 MElem/sec
complete_graph_all_paths_array_chunks/1                     1.00     32.8±0.54ns 29.0 MElem/sec    1.00     32.8±0.23ns 29.1 MElem/sec
complete_graph_all_paths_array_chunks/10                    1.01    356.9±2.79ns 26.7 MElem/sec    1.00    352.7±5.15ns 27.0 MElem/sec
complete_graph_all_paths_array_chunks/100                   1.00      2.4±0.02µs 39.8 MElem/sec    1.00      2.4±0.02µs 39.7 MElem/sec
complete_graph_all_paths_array_chunks/1000                  1.00     22.2±0.25µs 43.0 MElem/sec    1.00     22.1±0.17µs 43.2 MElem/sec
di_graph_from_complete_graph_all_paths/iter                 1.01    235.1±4.80ns  4.1 MElem/sec    1.00    233.9±4.85ns  4.1 MElem/sec
di_graph_from_complete_graph_all_paths_array_chunks/1       1.12    269.2±4.96ns  3.5 MElem/sec    1.00    241.3±3.81ns  4.0 MElem/sec
di_graph_from_complete_graph_all_paths_array_chunks/10      1.00      2.8±0.03µs  3.4 MElem/sec    1.03      2.9±0.05µs  3.3 MElem/sec
di_graph_from_complete_graph_all_paths_array_chunks/100     1.00     26.0±0.53µs  3.7 MElem/sec    1.02     26.5±0.56µs  3.6 MElem/sec
di_graph_from_complete_graph_all_paths_array_chunks/1000    1.00    255.9±3.20µs  3.7 MElem/sec    1.00    255.1±4.96µs  3.7 MElem/sec