instruction:
In this task, you are given a string of characters. You need to remove duplicate characters from the string if any, and return the resulting string.
question:
JvXQnblMcEKoPDpzkWUyQTcSluBpj
answer:
JvXQnblMcEKoPDpzkWUyTSuBj


question:
njmaCTiKTnSvvnwoINpZnCwuoerbw
answer:
njmaCTiKSvwoINpZuerb


question:
rFKxvPpJRegTtjuLHnZzrpidasL
answer:

rFKxvPpJRegTtjuLHnZzidas