Remove cdist_batched, which had a bug

[loganbvh]

No description provided.

[codecov]

Codecov Report

Merging #95 (c0bc777) into main (b871634) will increase coverage by 0.25%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main      #95      +/-   ##
==========================================
+ Coverage   95.61%   95.86%   +0.25%     
==========================================
  Files          36       36              
  Lines        4680     4673       -7     
==========================================
+ Hits         4475     4480       +5     
+ Misses        205      193      -12     

Impacted Files	Coverage Δ
superscreen/fem.py	94.44% <ø> (+1.68%)	⬆️
superscreen/solution.py	95.83% <100.00%> (+0.01%)	⬆️

... and 1 file with indirect coverage changes