Remove internal _default_port property

[bdraco]

What do these changes do?

Now that we have scheme available as self._scheme is should be a bit faster to avoid the extra property lookup, and a few less lines of code.

Are there changes in behavior for the user?

no

[codspeed-hq]

CodSpeed Performance Report

Merging #1424 will not alter performance

_{Comparing remove_default_port (8e4c369) with master (a8d2556)}

Summary

✅ 85 untouched benchmarks

[bdraco]

sigh codecov-action release broke ci
https://github.com/codecov/codecov-action/releases

[bdraco]

codecov/codecov-action#1683

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.61%. Comparing base (57d69fe) to head (8e4c369).
Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1424      +/-   ##
==========================================
+ Coverage   96.05%   99.61%   +3.56%     
==========================================
  Files          31       23       -8     
  Lines        5774     4732    -1042     
  Branches      348      316      -32     
==========================================
- Hits         5546     4714     -832     
+ Misses        202       18     -184     
+ Partials       26        0      -26     

Flag	Coverage Δ
CI-GHA	99.55% <100.00%> (+3.50%)	⬆️
MyPy	?
OS-Linux	99.55% <100.00%> (-0.01%)	⬇️
OS-Windows	99.61% <100.00%> (-0.01%)	⬇️
OS-macOS	99.30% <100.00%> (-0.01%)	⬇️
Py-3.10.11	99.28% <100.00%> (-0.01%)	⬇️
Py-3.10.15	99.51% <100.00%> (-0.01%)	⬇️
Py-3.11.10	99.51% <100.00%> (-0.01%)	⬇️
Py-3.11.9	99.28% <100.00%> (-0.01%)	⬇️
Py-3.12.7	99.51% <100.00%> (-0.01%)	⬇️
Py-3.13.0	99.51% <100.00%> (-0.01%)	⬇️
Py-3.9.13	99.23% <100.00%> (-0.01%)	⬇️
Py-3.9.20	99.47% <100.00%> (-0.01%)	⬇️
Py-pypy7.3.16	99.53% <100.00%> (-0.01%)	⬇️
Py-pypy7.3.17	99.55% <100.00%> (-0.01%)	⬇️
VM-macos-latest	99.30% <100.00%> (-0.01%)	⬇️
VM-ubuntu-latest	99.55% <100.00%> (-0.01%)	⬇️
VM-windows-latest	99.61% <100.00%> (-0.01%)	⬇️
pytest	99.55% <100.00%> (-0.01%)	⬇️

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