code: def removeBuiltinFunctions(source):
      lines = LineQueue()
  
      def LookingForBuiltinFunctions(line):
          if line.strip() == "/* Builtin functions */":
              return InBuiltInFunctions
          else:
              lines.add(line)
              return LookingForBuiltinFunctions
  
      def InBuiltInFunctions(line):
          if line.strip() == "":
              return LookingForBuiltinFunctions
          else:
              return InBuiltInFunctions
  
      state = LookingForBuiltinFunctions
      for line in UStringIO(source):
          state = state(line)
      return lines.getValue()
  
imports: import os
  import re
  import sys
  from plex import Scanner, Str, Lexicon, Opt, Bol, State, AnyChar, TEXT, IGNORE
  from plex.traditional import re
label_desc: Use image node_id 8 for calling a global function with example usage: removeBuiltinFunctions(source) and returns: lines, InBuiltInFunctions, LookingForBuiltinFunctions, LookingForBuiltinFunctions, InBuiltInFunctions