Removing Certain Keyboard Shortcuts

OK- there's a keyboard shortcut for OS X that clashes with Opera Shortcuts:

CMD & Shift & B

Now, by default, that opens the Bluetooth options. Anyways of deleting it? Sometimes, even with Opera highlighted, the OS X Bluetooth opens when all I want is the Opera one.

Can I get rid of or amend the Bluetooth option?

I've looked in the System Preferences: Keyboard and Mouse option but it's not listed?

Thanks