Fix: Remove previewnet in init

[chasefleming]

Closes #1745

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For contributor use:

• Targeted PR against master branch
• Linked to Github issue with discussion and accepted design OR link to spec that describes this work
• Code follows the standards mentioned here
• Updated relevant documentation
• Re-reviewed Files changed in the Github PR explorer
• Added appropriate labels

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 0% with 2 lines in your changes missing coverage. Please review.

Project coverage is 29.50%. Comparing base (620ddaa) to head (efc29bc).

Files with missing lines	Patch %	Lines
internal/super/setup.go	0.00%	2 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1746   +/-   ##
=======================================
  Coverage   29.50%   29.50%           
=======================================
  Files          88       88           
  Lines        5161     5161           
=======================================
  Hits         1523     1523           
  Misses       3451     3451           
  Partials      187      187           

Flag	Coverage Δ
unittests	29.50% <0.00%> (ø)

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