code: def _unset_default_params(glyphs):
      
      for glyphs_name, _, default_value in DEFAULT_PARAMETERS:
          if (
              glyphs_name in glyphs.customParameters
              and glyphs.customParameters[glyphs_name] == default_value
          ):
              del (glyphs.customParameters[glyphs_name])
          # These parameters can be referred to with the two names in Glyphs
          if (
              glyphs_name in glyphs.customParameters
              and glyphs.customParameters[glyphs_name] == default_value
          ):
              del (glyphs.customParameters[glyphs_name])
docs: Unset Glyphs.app's parameters that have default values.
      FIXME: (jany) maybe this should be taken care of in the writer? and/or
          classes should have better default values?