Get rid of signal_raise

[A5rocks]

I noticed signal.raise_signal seems to do what signal_raise used to. Let's use that instead.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.62%. Comparing base (c7801ae) to head (980bee0).
Report is 20 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3126      +/-   ##
==========================================
- Coverage   99.63%   99.62%   -0.01%     
==========================================
  Files         122      122              
  Lines       18380    18357      -23     
  Branches     1222     1221       -1     
==========================================
- Hits        18312    18289      -23     
  Misses         47       47              
  Partials       21       21              

Files with missing lines	Coverage Δ
src/trio/_core/_tests/test_guest_mode.py	100.00% <100.00%> (ø)
src/trio/_core/_tests/test_ki.py	100.00% <100.00%> (ø)
src/trio/_signals.py	100.00% <100.00%> (ø)
src/trio/_tests/test_repl.py	100.00% <ø> (ø)
src/trio/_tests/test_signals.py	100.00% <100.00%> (ø)
src/trio/_tests/test_util.py	100.00% <ø> (ø)
src/trio/_util.py	100.00% <ø> (ø)

[CoolCat467]

Looks good as far as I can tell, but wondering, why didn't we just use signal.raise_signal to begin with? Did a bug get fixed or something?

Looking into it lightly, looks like signal.raise_signal was added in 3.8, so maybe 3.7 support reasons?

[A5rocks]

I assume the code was written pre-3.8

[jakkdl]

I assume the code was written pre-3.8

yep, 2017 - 300a19d
3.7 hadn't even been released!

good find 👍