how to delete the nvidia sign while booting system

gedit /etc/X11/xorg.conf
find the following pragraph:
Section "Device"
BoardName "GeForce 6150 LE"
BusID "0:5:0"
Driver "nvidia"
Identifier "Device[0]"
Screen 0
VendorName "NVidia"
EndSection
add a opnion in this pragraph so it will look like this
Section "Device"
BoardName "GeForce 6150 LE"
BusID "0:5:0"
Driver "nvidia"
Identifier "Device[0]"
Screen 0
VendorName "NVidia"
Option "NoLogo" "1"
EndSection