old_contents: """
  redrock
  =======
  
  Redrock redshift fitter.
  """
  
  from __future__ import absolute_import, division, print_function
  
  from ._version import __version__
  
  from .targets import (Spectrum, Target, DistTargets)
  
  from .templates import (Template, find_templates, DistTemplate)
  
  from . import rebin
  
  from . import zscan
  
  from . import fitz
  
  from . import zwarning
  
  from . import results
  
  from .zfind import zfind
  
  from .plotspec import PlotSpec
  
new_contents: """
  redrock
  =======
  
  Redrock redshift fitter.
  """
  
  from __future__ import absolute_import, division, print_function
  
  from ._version import __version__
  
  # from .targets import (Spectrum, Target, DistTargets)
  #
  # from .templates import (Template, find_templates, DistTemplate)
  #
  # from . import rebin
  #
  # from . import zscan
  #
  # from . import fitz
  #
  # from . import zwarning
  #
  # from . import results
  #
  # from .zfind import zfind
  #
  # from .plotspec import PlotSpec
  
subject: remove unnecessary imports