Remove llmkdir() and exists() functions as they are now in stdlib/dirs.c
Remove llmkdir() and exists() functions as they are now in stdlib/dirs.c

MarcNo/lifelines,MarcNo/lifelines,disassembler/Lifelines,MarcNo/lifelines,disassembler/Lifelines,disassembler/Lifelines,MarcNo/lifelines,disassembler/Lifelines