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.
One example: abCCdDDgGGhi
Solution is here: abCdDgGhi
Explanation: The input string has 3 duplicate characters and the resulting output string has no duplicate characters.

Now, solve this: yNuwnqBsSCMSttcxfDtHV
Solution:
yNuwnqBsSCMtcxfDHV