Don't add @option when generating Mu code

[cb372]

This annotation is deprecated and will be deleted.

[codecov]

Codecov Report

Merging #275 into master will decrease coverage by 0.09%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #275      +/-   ##
==========================================
- Coverage   83.94%   83.85%   -0.10%     
==========================================
  Files          29       29              
  Lines        1900     1889      -11     
  Branches       22       25       +3     
==========================================
- Hits         1595     1584      -11     
  Misses        305      305              

Impacted Files	Coverage Δ
...n/scala/higherkindness/skeuomorph/mu/codegen.scala	88.88% <ø> (-0.13%)	⬇️
...euomorph/openapi/client/http4s/circe/package.scala	91.95% <0.00%> (-0.44%)	⬇️
...ala/higherkindness/skeuomorph/openapi/schema.scala	95.06% <0.00%> (-0.07%)	⬇️
...main/scala/higherkindness/skeuomorph/Printer.scala	82.75% <0.00%> (ø)
...in/scala/higherkindness/skeuomorph/mu/schema.scala	64.28% <0.00%> (ø)
.../scala/higherkindness/skeuomorph/avro/schema.scala	57.62% <0.00%> (ø)
.../scala/higherkindness/skeuomorph/mu/Optimize.scala	55.00% <0.00%> (ø)
...scala/higherkindness/skeuomorph/mu/Transform.scala	71.42% <0.00%> (ø)
...cala/higherkindness/skeuomorph/avro/Protocol.scala	31.81% <0.00%> (ø)
...cala/higherkindness/skeuomorph/openapi/print.scala	99.15% <0.00%> (ø)
... and 11 more

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