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.

Let me give you an example: abCCdDDgGGhi
The answer to this example can be: abCdDgGhi
Here is why: The input string has 3 duplicate characters and the resulting output string has no duplicate characters.

OK. solve this:
DNdkHcHSKvkIJaZVDatbpCocRmM
Answer:
DNdkHcSKvIJaZVtbpCoRmM