Please solve the programming task below using a self-contained code snippet in a markdown code block.

You are given a string s, which contains stars *.
In one operation, you can:

Choose a star in s.
Remove the closest non-star character to its left, as well as remove the star itself.

Return the string after all stars have been removed.
Note:

The input will be generated such that the operation is always possible.
It can be shown that the resulting string will always be unique.

 
Please complete the following python code precisely:
```python
class Solution:
    def removeStars(self, s: str) -> str:
```