How to delete old Grid and DB homes in ODA X5-2 running on DCS stack?

Hello Experts,

I want to delete old Grid and DB homes from ODA X5-2 machine running on DCS stack. Please share the doc id or steps if anyone of you has performed the same. Below is my environment details:-

root @ testa # odacli describe-component

System Version

---------------

18.5.0.0.0

System node Name

---------------

testa

Local System Version

---------------

18.5.0.0.0

Component                                Installed Version    Available Version

---------------------------------------- -------------------- --------------------

OAK                                       18.5.0.0.0            up-to-date

GI                                        18.5.0.0.190115       up-to-date

DB {

[ OraDb12102_home1 ]                      12.1.0.2.190115       up-to-date

[ OraDb11204_home1 ]                      11.2.0.4.180717       11.2.0.4.190115

}

DCSAGENT                                  18.5.0.0.0            up-to-date

ILOM                                      4.0.2.26.b.r125868    up-to-date

BIOS                                      30130500              up-to-date

OS                                        6.10                  up-to-date

FIRMWARECONTROLLER {

[ c0 ]                                    4.650.00-7176         up-to-date

[ c1,c2 ]                                 13.00.00.00           up-to-date

}

FIRMWAREEXPANDER                          0018                  up-to-date

FIRMWAREDISK {

[ c0d0,c0d1 ]                             A7E0                  up-to-date