Remove the parentheses

In this kata you are given a string for example:

"example(unwanted thing)example"

Your task is to remove everything inside the parentheses as well as the parentheses themselves.

The example above would return:

"exampleexample"

Notes

• Other than parentheses only letters and spaces can occur in the string. Don't worry about other brackets like "[]" and "{}" as these will never appear.
• There can be multiple parentheses.
• The parentheses can be nested.