[gentoo-user] Boot has no space left.

[Guillermo García]

Hello again guys, how are you? I hope you're fine.

I remember someone told me a program to use to remove old kernels in 
order to get more space on /boot, i tried to search the original message 
that the guy sent me trough this list, but i cannot find it.

Here's a screenshot of my /boot folder:

I guess the kernel version i use is this one:

Could someone tell me a method to remove the old kernels in order to get 
more space in /boot?

Thank you, and regards,

Guillermo.