Remove --print-ast CLI flag as PsiViewer provides the same features

[schalkms]

Closes #5417

[codecov]

Codecov Report

Merging #5418 (17a0f0b) into main (b620bd5) will decrease coverage by 0.00%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##               main    #5418      +/-   ##
============================================
- Coverage     85.97%   85.96%   -0.01%     
+ Complexity     3613     3608       -5     
============================================
  Files           514      513       -1     
  Lines         12055    12042      -13     
  Branches       2161     2158       -3     
============================================
- Hits          10364    10352      -12     
+ Misses          618      617       -1     
  Partials       1073     1073              

Impacted Files	Coverage Δ
.../kotlin/io/gitlab/arturbosch/detekt/cli/CliArgs.kt	100.00% <ø> (ø)
...otlin/io/gitlab/arturbosch/detekt/cli/CliRunner.kt	7.69% <ø> (+0.54%)	⬆️

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[BraisGabin]

As a side note, @samuelneff, even we don't want to keep the maintenance of these feel free to copy these code and create your own stand-alone cli for printing the ast tree.

And I think that ktlint has this feature on their cli too so that's other option.