I tried to instal Win 10 via bootcamp but the installation failed. I'm not too bothered it failed however during the process Bootcamp made a 32Gbyte partition which I now can't delete. I can see it in OSX and read/write to it with no problems however I don't want it there anymore. Disk utility doesn't seem to be able to 'absorb' it back into my main drive. How do I proceed?