HOW TO Uninstall WinCC OA software from linux centOS7

Im trying with all the commands that google or any forum is suggesting but unable to uninstall a software “WinCC OA” from centOS7 linux

Is software installed by rpm or yum command? Does it get listed by the yum or rpm command like as follows:

rpm -qa | grep -i wincc
yum list installed *wincc*

Post output from above two commands.