find parenthesis using jquery

I have the following text:

10X5 (h) testing (20) - boxes

i want to only have 10X5 (h) testing

I need a code that find the last ( and then trim to this one - 1 character. I have many different text lengths, this is the reason why i need the last (. any idea?
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Hammadh Abdul RahmanCommented:
myString.replace(/\([^(]*$/, "") can be used.

I tested by running the following
var myString ="10X5 (h) testing (20) - boxes";
myString =myString.replace(/\([^(]*$/, "");

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joyacv2Author Commented:
works excellent!!!!!!!!!!!!!!!!!!!!!!!!
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