You could try an action of the type "Replace with Regular Expression"
Search string: \s*\(.*
Replace with:
(leave empty)
Works for text where the round brackets are the first brackets, just like your example
You could try an action of the type "Replace with Regular Expression"
Search string: \s*\(.*
Replace with:
(leave empty)
Works for text where the round brackets are the first brackets, just like your example