[Arm-dev] /boot full!

My /boot is full!

I had left it at the 'default' of 524MB and after all the kernel 
updates, it is finally full.

I would say this is a bug in update-boot, not to trim down /boot old images.

So I had to delete the 201 and 202 files out of /boot to install this 
latest 4.9.34-203.

But what about removing the directories:

dtb-4.4.34-201.el7.armv7hl
dtb-4.4.42-202.el7.armv7hl

Can those also just be deleted?

thanks