chore: cleanup

[erdos]

• remove unused code
• make docker app build reproducible
• chore: remove io! macro calls from inner functions

[codecov-commenter]

Codecov Report

Merging #74 (58bde71) into master (ce02138) will increase coverage by 0.09%.
The diff coverage is 66.66%.

@@            Coverage Diff             @@
##           master      #74      +/-   ##
==========================================
+ Coverage   92.00%   92.09%   +0.09%     
==========================================
  Files          24       23       -1     
  Lines        1775     1771       -4     
  Branches      110      110              
==========================================
- Hits         1633     1631       -2     
+ Misses         32       30       -2     
  Partials      110      110              

Impacted Files	Coverage Δ
src/stencil/tree_postprocess.clj	100.00% <ø> (ø)
src/stencil/types.clj	100.00% <ø> (+4.34%)	⬆️
src/stencil/util.clj	98.46% <ø> (+1.44%)	⬆️
src/stencil/process.clj	78.57% <25.00%> (+0.52%)	⬆️
src/stencil/model.clj	95.51% <85.71%> (-0.57%)	⬇️
src/stencil/model/common.clj	92.30% <100.00%> (+5.64%)	⬆️
src/stencil/postprocess/list_ref.clj	92.45% <0.00%> (+0.03%)	⬆️

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