When dropping PDB including datafiles then the PDB directory itself is not removed.
oradata directory where all the PDB's are stored has hundreds of empty directories because PDB's are cloned and dropped very frequently. I'm using ASM, directory names are like /u02/oradata/DB01/B3FE093536B0441DE0533F19A8C00C48
Question: why it's not removed and is ok to remove it myself?