TASK DEFINITION: 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.
PROBLEM: mgbQjVSQauFIaVRpCVIBgXH

SOLUTION: mgbQjVSauFIRpCBXH

PROBLEM: RSIIYSRjhKYxdfDrFUukVHMOcYR

SOLUTION: RSIYjhKxdfDrFUukVHMOc

PROBLEM: BzQaOUyLaCfWdGlaQcEAXtzDSi

SOLUTION:
BzQaOUyLCfWdGlcEAXtDSi

