I noobed this up something proper.
I ran out of space in the / partition. I have more than enough space over at /home partition.
made a .tar backup of /home
umount /dev/mapper/centos-home and use lvremove to free up the space
Skipped making a NEW, SMALLER /home partition! <~ ROOKIE MOVES, MAN.
lvextend the / to 100%
now I don't have a /home.

What I do now for my .ssh/authorized_keys ??
Thanks dudes.