Given the task definition, example input & output, solve the new input case.
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.
Example: abCCdDDgGGhi
Output: abCdDgGhi
The input string has 3 duplicate characters and the resulting output string has no duplicate characters.

New input case for you: tHKixfuMiKESMqerSljlnIarbDl
Output:
tHKixfuMESqerljnIabD