Remove some unused utility functions

[jbeezley]

No description provided.

[codecov-io]

Codecov Report

Merging #686 into master will increase coverage by 0.11%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #686      +/-   ##
==========================================
+ Coverage      95%   95.11%   +0.11%     
==========================================
  Files          83       83              
  Lines        8630     8622       -8     
==========================================
+ Hits         8199     8201       +2     
+ Misses        431      421      -10

Impacted Files	Coverage Δ
src/util/init.js	86.88% <ø> (+2.22%)	⬆️
src/mapInteractor.js	96.12% <0%> (+0.28%)	⬆️

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