code: def removeSkipGlyphs(self):
      # Determines if a name, location pair is a valid data location.
      # Skip glyphs are marked when the size is equal to zero.
      def isValidLocation(args):
          (name, (startByte, endByte)) = args
          return startByte < endByte
  
      # Remove all skip glyphs.
      dataPairs = list(
          filter(isValidLocation, zip(self.names, self.locations))
      )
      self.names, self.locations = list(map(list, zip(*dataPairs)))
  
imports: from fontTools.misc import sstruct
  from .None import DefaultTable
  from fontTools.misc.textTools import bytesjoin, safeEval
  from .BitmapGlyphMetrics import BigGlyphMetrics, bigGlyphMetricsFormat, SmallGlyphMetrics, smallGlyphMetricsFormat
  import struct
  import itertools
  from collections import deque
  import logging
label_desc: Use image node_id 10 for calling the EblcIndexSubTable obj's underlying member method code with example usage: obj.removeSkipGlyphs() and returns: unknown