Make _remove_dot_segments() linear and skip ineligible URLs early.

[wRAR]

No description provided.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (4d7db49) to head (fc3d1cb).

Additional details and impacted files

@@            Coverage Diff            @@
##            master      #352   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           10        10           
  Lines         1043      1042    -1     
  Branches       231       231           
=========================================
- Hits          1043      1042    -1     

Files with missing lines	Coverage Δ
w3lib/url.py	100.00% <100.00%> (ø)

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[codspeed]

Merging this PR will not alter performance

✅ 65 untouched benchmarks

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_{Comparing dot-segments-linear (fc3d1cb) with master (4d7db49)}