Delete backups after rpi-update

After installing rpi-update:

sudo apt-get update
sudo apt-get install rpi-update

And doing an update of the firmware and the kernel with it:

sudo rpi-update

You can delete the backups done by rpi-update (but be sure to test everything is ok rebooting the Raspberry Pi first). In my case I updated from 3.10-3-rpi to 3.10.33+ and those are the commands I used:

sudo rm -R /boot.bak
sudo rm -R /lib/modules.bak
sudo rm -R /lib/modules/3.10-3-rpi

Ref: http://www.raspberrypi.org/phpBB3/viewtopic.php?f=27&t=28434
https://github.com/Hexxeh/rpi-update