To uninstall Oracle Virtual Networking drivers, remove each of the VIB packages that are installed with the Oracle Virtual Networking driver.
esxcli software vib remove -n package-name
Remove the following VIB packages one after the other:
scsi-xsvhba
net-xve
net-xsvnic
net-xscore
net-ib-cm
net-mlx4-ib
net-ib-ipoib
net-ib-sa
net-ib-mad
net-ib-core
net-mlx4-core