Remove deprecations

[blast-hardcheese]

In preparation for 1.0.0, delete deprecated methods and println's.

[codecov]

Codecov Report

All modified lines are covered by tests ✅

Comparison is base (c1aadd7) 82.27% compared to head (5bfd1c6) 82.34%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1827      +/-   ##
==========================================
+ Coverage   82.27%   82.34%   +0.07%     
==========================================
  Files          93       93              
  Lines        7310     7297      -13     
  Branches      829      831       +2     
==========================================
- Hits         6014     6009       -5     
+ Misses       1296     1288       -8     

Files	Coverage Δ
...re/src/main/scala/dev/guardrail/core/Tracker.scala	95.45% <ø> (+4.15%)	⬆️
...ain/scala/dev/guardrail/core/extract/package.scala	100.00% <100.00%> (ø)
...a/dev/guardrail/core/resolvers/ModelResolver.scala	85.86% <100.00%> (+2.36%)	⬆️
...la/dev/guardrail/generators/java/syntax/Java.scala	78.23% <ø> (+0.52%)	⬆️
...enerators/scala/http4s/Http4sClientGenerator.scala	94.00% <ø> (+0.93%)	⬆️

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