Streamline redundant parameter passing in constraint constructors

[jGaboardi]

This PR resolves #317; there is no change to actual functionality.

[codecov]

Codecov Report

Merging #319 (4565f4f) into main (8e6b192) will increase coverage by 0.2%.
The diff coverage is 97.8%.

@@           Coverage Diff           @@
##            main    #319     +/-   ##
=======================================
+ Coverage   73.8%   74.0%   +0.2%     
=======================================
  Files         23      23             
  Lines       2456    2474     +18     
  Branches     476     476             
=======================================
+ Hits        1812    1830     +18     
  Misses       579     579             
  Partials      65      65             

Impacted Files	Coverage Δ
spopt/locate/p_dispersion.py	100.0% <ø> (ø)
spopt/locate/coverage.py	95.6% <93.3%> (+<0.1%)	⬆️
spopt/locate/base.py	93.6% <100.0%> (+0.6%)	⬆️
spopt/locate/p_center.py	100.0% <100.0%> (ø)
spopt/locate/p_median.py	100.0% <100.0%> (ø)

[jGaboardi]

@sjsrey & @gegen07 I'd like to get this merged then I can knock out #318 before I circle back on some CLSCP-SO clean-up & example stuff I am working on (xref #320). Either of you have time for a quick review?

[gegen07]

LGTM!